How do you translate a tactile graphic or raised-line diagram into another language or into an accessible text explanation without losing its spatial meaning? Treat it as a structured representation rather than a page of labels. Identify the whole diagram, the key, the orientation, the major parts, and the relationships between those parts. A faithful translation preserves what can be learned by exploring the original figure: which line connects to which shape, which area is larger, which arrow indicates direction, and what every symbol means in context.
People searching for tactile graphics translation may be working with embossed diagrams, swell-paper drawings, tactile maps, raised illustrations, Braille-labelled charts, or accompanying text descriptions. These materials serve readers with different access needs, and a plain verbal description cannot always replace a well-designed tactile graphic. The practical task may be translating accompanying labels, producing an accessible long description, preparing a bilingual legend, or briefing a qualified tactile-graphics producer to create an equivalent target-language edition.
The key problem is hidden structure. The word ‘river’ might translate perfectly while the river’s relationship to a bridge disappears. A triangle might be correctly named while an arrow is reversed. A tactile key might be translated but its abbreviated labels still clash with existing symbol codes. This guide shows how to preserve the diagram’s information, manage uncertainty, coordinate linguistic and tactile review, and check whether the translated version actually supports the intended learning task.
The governing principle: translate the model, not only the words
A raised-line diagram encodes a model through boundaries, textures, relative position, connections, labels and conventions. Language is one layer of that model. Accurate translation therefore requires an inventory of the features readers must distinguish to complete the task. A map reader may need direction and location; a biology learner may need the relation between an organ and its parts; a mathematics learner may need exact axes and values. No generic description can substitute for knowing the purpose of the figure.
Before drafting, write a simple content specification: what kind of figure is this, what is its educational or navigational purpose, what are its essential relationships, and what can reasonably be omitted without changing the task? This specification should be reviewed alongside the actual raised graphic, not built from memory. Where possible, work with a tactile reader or specialist who can tell you whether the drawing conveys what the accompanying prose claims.
Tactile graphics are not Braille text
Braille is a reading and writing system that uses tactile dot patterns and language-specific codes. Tactile graphics are raised representations of spatial and other visual relationships. The two often coexist: a tactile map may use abbreviated Braille labels beside raised lines and textures. Translating a Braille abbreviation requires knowledge of its code, but translating the graphic requires separate attention to geometry, legend, arrangement and physical discriminability. Do not assume a string of dots is simply a diagram feature or that every textured area is a word.
This distinction matters when preparing multilingual editions. Target-language labels may require more cells than the source, and simply enlarging them can crowd the tactile drawing. Translators should supply approved terms and any needed expansions, while specialist producers decide whether to move labels into a key, adjust leader lines, or use another permitted presentation. Changing the tactile representation without reader testing is not a linguistic shortcut; it changes the learning material.
Build a complete diagram inventory
Record the figure’s title, caption, orientation marker, physical size, intended reading direction, legends, textures, line types, points, arrows and label positions. Capture the relationships: inside, outside, adjacent, overlaps, crosses, connects, parallel, upstream, clockwise, above and beneath. Mark values and units exactly. When a raised arrow contains a small arrowhead, it may indicate motion; when it is an axis arrow, it may indicate increasing coordinate value. The same shape can have several functions.
Prepare a source diagram record that assigns an identifier to each meaning-bearing feature. Feature A might be a thick outer boundary; feature B a dotted internal line; feature C a hatched region. A bilingual glossary then maps each feature identifier to an intended label in the target language. This traceability reduces the risk of translating the correct word but attaching it to the wrong feature. It also makes questions to the author or producer precise.
Explain the whole before listing the parts
Accessible descriptions work better when readers first know what kind of object or representation they are exploring. Begin with a short orienting sentence: ‘This diagram shows the three layers of a cross-section, from outside to inside,’ or ‘This map shows two paths joining near the entrance.’ Then describe parts in an order that supports the task. For a geometric proof, this may mean identifying points and segments; for a tactile map, it may mean starting at the entrance and following a route.
Do not use decorative adjectives to fill a description. A line is not ‘beautiful’ or ‘elegant’ unless the educational activity concerns style. Specify whether it is straight, curved, continuous, dotted, thick, horizontal or diagonal if that property carries information. Precision is especially valuable when the reader cannot visually inspect the figure to repair an ambiguous phrase.
Orientation changes meaning
Left and right are relative to a point of view. A raised map may have north at the top, while a body diagram may depict the subject’s right side on the reader’s left. A circuit diagram may not have meaningful compass directions at all. Before translating directional language, establish the frame: page orientation, viewpoint, rotation, mirror image or named axis. A translator who changes perspective mid-description can produce internally grammatical but physically contradictory instructions.
If the source says ‘on the left’ without naming whose left, do not silently resolve it when two viewpoints are plausible. Ask for clarification or phrase the target statement with the verified reference frame. Readers should not need to infer orientation from a single floating spatial term. A short orienting line can prevent many later misreadings.
Legend, texture and key must remain matched
A textured region may represent forest, pressure, water, a category or merely an area to touch. The key determines its meaning. Translate every key entry and compare it with the actual textured samples. When a graphic uses dashed, dotted and solid boundaries, preserve the distinction even if the words for the line types differ between languages. Where a local term is unfamiliar to the learner, use a clear explanation in a legend rather than assigning a false familiar label.
Abbreviation design needs attention. A source may use two-letter codes based on English words; their initials may no longer make sense in another language. Keeping the original codes may be acceptable when the legend explicitly defines them; replacing them may be better for independent reading. The decision must be consistent, documented and tested for collisions with other feature identifiers.
Scale, measurement and quantitative claims
Diagrams may show actual size, relative scale or no scale at all. Translators must not imply that a schematic is measured. A scientific cell drawing may deliberately enlarge one organelle to make it identifiable. A tactile map may exaggerate narrow features because the reader needs room to trace them. Translate scale bars, ratios and units exactly where present, but distinguish instructional exaggeration from a quantitative claim.
When measurement conversion is appropriate, state the converted unit and verify arithmetic against the source. Do not infer an exact length by measuring an embossed line on a reproduction unless the source defines its scale. Printed and embossed dimensions can differ, and scaling a diagram to fit a page can change those measurements without changing the represented quantities.
A diagram can encode sequence, causality or hierarchy
Arrows in a flowchart may mean the next step; in a force diagram, a vector; in a food web, an energy relationship; in an organizational chart, a reporting relation. Translate arrow meaning from the subject and caption, not from appearance alone. In particular, ‘A points to B’ is not equivalent to ‘B causes A.’ The direction of a line’s arrowhead can be crucial even when the connected node labels are correct.
For hierarchical structures, record parent-child relationships and whether a link means inclusion, supervision, prerequisite or descent. For a sequence, number steps in the verified order if that helps the target reader. For a cycle, state where a traversal begins for the explanation without suggesting that the physical process has an absolute first stage when it does not.
When text descriptions help—and when they do not replace touch
A long description can make a complex image more usable by narrating the structure, data and relationships. W3C’s Web Accessibility Initiative recommends a short identifying alternative and a more extensive description when an image conveys more than a brief phrase can preserve. That framework is a good starting point for translated figures, but the description should not claim to reproduce tactile exploration in every case. Some tasks depend on spatial inspection, discrimination of textures or independent tracing.
A reader may need both the translated tactile drawing and a text explanation; another reader may rely on speech output; a third may prefer a simplified diagram accompanied by Braille. Ask which access route is required. Avoid making a text-only version the sole available resource merely because translating the physical material is difficult. Equivalent learning opportunity may require specialist format production, not just more prose.
Worked cases: from maps to mathematics
1. Raised route map
Consider this example: A tactile map shows an entrance at the lower edge, a curved route that crosses a textured garden, and a second route leading to a lift. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Translate the entrance, garden and lift labels, then verify which path reaches which destination. State the selected frame of reference before describing left and right. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
A plausible but false description such as ‘the lift is straight ahead’ could send a reader down the garden route. Test the route by tracing with a finger. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
2. River and bridge
Consider this example: A raised geographical diagram shows a river flowing through two regions, with one bridge marked where a road crosses. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Keep river course, road crossing and bridge connection distinct. The label for the bridge belongs to a point where paths intersect, not to the entire raised road line. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
Check whether the flow arrow shows current direction or simply identifies the river on the diagram; these require different translated verbs. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
3. Volcano cross-section
Consider this example: An embossed science diagram has a cone, a central channel and a chamber beneath the cone. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Describe the outer shape first and then the connections between chamber, channel and opening, without claiming every volcano has exactly this structure. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
A translated label for ‘vent’ should not be attached to the magma chamber. Trace each leader line to its endpoint. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
4. Human heart
Consider this example: A tactile heart diagram labels chambers and indicates blood flow with arrows. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Distinguish anatomical left from the reader’s left, preserve which chambers connect through valves, and keep arrow direction intact. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
A fluent translation that swaps atrium and ventricle is not a harmless vocabulary error; it changes the model of circulation. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
5. Plant anatomy
Consider this example: An illustration shows root, stem, leaf and an enlarged inset of a leaf surface. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Tell the reader when the description moves to the inset. Translate ‘detail view’ as magnification or close examination only when supported by the legend. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
Otherwise a small structure shown beside the plant may seem to be another organ attached at that physical location. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
6. Food web
Consider this example: A tactile network has three species and arrows labelled ‘energy transferred to’. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Preserve the direction of energy movement rather than reading arrows as ‘eats’. Both descriptions may relate, but the diagram’s defined relationship is the evidence. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
Test one arrow with a subject-matter reviewer: if organism A is food for B, the energy arrow ordinarily goes from A to B. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
7. Triangle proof
Consider this example: A geometry diagram marks triangle ABC, a parallel line through D and equal lengths using identical tick marks. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Keep point letters exactly or use a documented systematic substitution; preserve which segments have equality marks and which lines are parallel. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
A single mistaken letter makes subsequent proof text incoherent. Read each proposition against the physical line before translating it. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
8. Circle geometry
Consider this example: A diagram identifies center O, chord AB, radius OC and a tangent at D. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Translate ‘chord,’ ‘radius’ and ‘tangent’ as distinct mathematical objects; do not treat every line that touches the circle as the same relation. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
The tangent touches at one point locally, while a chord joins two boundary points. The graphic should support that difference. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
9. Coordinate grid
Consider this example: A raised coordinate plane shows origin, positive axes and a point plotted at a labelled pair. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Keep axis order and signs. A point written (3, -2) cannot become (-2, 3) when a translator changes the surrounding reading direction. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
Ask a learner to locate the point from the target-language description, then compare with the original tactile mark. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
10. Bar chart
Consider this example: Three embossed bars of distinct heights represent monthly visits, and the legend lists actual values. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
State the categories and exact figures. The physical bar heights support comparison but should not be read as exact values unless the scale justifies that. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
Distinguish highest bar from latest month; the order on the axis may not match the ranking by value. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
11. Line graph
Consider this example: Two textured lines cross at one point, and a legend differentiates two data series. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Explain which series each texture represents, the axes, and where the relative positions change. Do not infer causal influence from a crossing. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
A trend description needs the measured variable and interval, not merely a metaphor such as one line overtakes another. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
12. Pie chart
Consider this example: A raised circle is divided into regions with labels, one region significantly larger than the others. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Describe the proportions based on the printed data rather than estimating from tactile arc length. Check that a percentage attaches to the correct sector. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
If the chart lacks exact percentages, say one category occupies the largest sector instead of inventing a numerical share. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
13. Venn diagram
Consider this example: Two overlapping raised circles show membership and a shared middle region. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Translate the labels and clarify that the overlap contains items belonging to both sets, not neither set. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
The boundary of the overlap may feel like a third shape; the accompanying wording should reconstruct the inclusion relation. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
14. Electrical circuit
Consider this example: A raised diagram shows a battery, switch, resistor and two branches, with conventional circuit symbols. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Identify what is connected in series and parallel, and distinguish a schematic from a physical wiring plan. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
If a switch is drawn open, do not describe current flowing through that branch as a proven fact. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
15. Machine assembly
Consider this example: A raised exploded diagram shows pieces offset to reveal how they fit together. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Preserve part labels and clarify that the spaces are for display, not necessarily literal gaps in the assembled machine. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
Check numbered assembly steps against the drawing. A translated number attached to the wrong screw or washer can defeat the whole guide. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
16. Water cycle
Consider this example: A tactile diagram uses arrows among sea, cloud, mountain and river, with labels for processes. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Separate evaporation, condensation, precipitation and runoff, following the arrows without implying all water follows one identical path. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
A cycle diagram often has no privileged starting point; explain one route as a way of reading, not an absolute beginning. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
17. Rock layers
Consider this example: A cross-section has several textured strata interrupted by a diagonal fault. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Preserve which layer lies above another and identify where the fault cuts across the sequence. Do not rename the fault a fold. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
A reliable target description distinguishes contact lines, layer textures and displacement, because these encode different geological claims. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
18. Anatomical skeleton
Consider this example: A tactile illustration depicts a joint with arrows showing permitted movement. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Keep the body viewpoint clear and translate movement directions into the correct anatomical terms or an accessible explanation. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
Do not infer that an arrow proves the maximum safe range of movement. The illustration may show a type, not a clinical prescription. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
19. Architecture floor plan
Consider this example: A raised plan shows room outlines, doors, accessible entrance and a stair core. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Translate the legend, door identifiers and entrance information. Describe connections, not just room adjacency, since a wall may separate nearby spaces. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
A directional statement must begin from an identifiable entrance. Check whether the drawing is mirrored relative to a printed original. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
20. Historic timeline
Consider this example: A raised line with distinct points encodes dates along a horizontal axis. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Treat spacing as quantitative only when the caption defines a scale; some timelines are schematic to fit labels. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
Translate the event titles, keep chronology exact and ensure text direction changes do not reverse earlier and later. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
21. Chemical apparatus
Consider this example: A diagram shows a flask connected by a tube to a collection vessel, with arrows for gas flow. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Describe connections and direction without offering unsafe procedures beyond the diagram. Verify vessel names with a science specialist. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
A translated description that reverses inlet and outlet could misrepresent the apparatus even though every component name is correct. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
22. Computer network
Consider this example: Raised nodes and connections represent devices and links, while dashed lines denote a wireless connection. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Translate node roles and connection types without assuming spatial proximity indicates physical distance or bandwidth. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
A dotted connection may mean logical or wireless relationship, depending on the legend; the source key governs the target term. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
23. Tactile artwork
Consider this example: An art reproduction uses raised contours to represent figure, background and material texture. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Distinguish a represented object’s texture from the texture used to mark its boundary. Do not embellish with emotional readings absent from the work. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
A useful description tells the reader what can be explored and what interpretive claims remain optional or contested. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
24. Weather map
Consider this example: A tactile weather diagram marks pressure systems and a front by distinct line patterns. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Translate meteorological terminology with reference to its standard meaning. The front’s direction and category must be checked against the original symbols. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
A map summary saying ‘bad weather moves east’ may introduce a conclusion unsupported by the source forecast. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
25. Music score diagram
Consider this example: A tactile overview depicts musical sections A and B and repeat arrows, rather than the musical notes themselves. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Explain formal sequence, repeats and endings while keeping the labels stable. Avoid treating a performance roadmap as a melody transcription. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
Check which arrow belongs to a repeat and whether the source indicates a conditional ending or a mandatory return. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
26. Organization chart
Consider this example: Raised boxes represent roles with solid vertical reporting lines and dotted advisory links. The translator’s first task is to understand the content encoded by the raised shapes, linework and positioning. Naming the visible or tactile objects alone would not tell the reader how to interpret their relationship.
Distinguish direct supervision from consultation, and retain the relative hierarchy rather than interpreting the top box as the most valuable person. The wording should let the target reader reconstruct the same essential spatial model and answer the same relevant question that the original figure was designed to support.
A reader should be able to answer who reports to whom and where advice flows without being misled by spatial layout alone. Compare the target label, the graphic feature, the legend and the surrounding instructional material as one unit. If a second reader can follow every word but cannot identify the intended connection or quantity, the translation still needs repair.
A reliable multilingual tactile-graphic production process
First identify whether the deliverable is an accessible text description, translated labels for an existing tactile figure, a new tactile edition, or a coordinated package containing more than one format. These are distinct outputs. Obtain the source figure and any original author explanation. Record every figure identifier, title, caption, legend entry, orientation mark and label. Translate a terminology glossary before adjusting layout, especially for technical subject terms where a wrong noun can contaminate every later explanation.
Next work through the figure feature by feature. For each feature, specify the source label, the intended concept, the translated expression and the evidence for attaching that expression to that feature. For quantitative charts, capture units and values separately from the physical impression of length or area. For maps, record connectivity separately from distance. For hierarchies, record relation type separately from box position. This prevents language choices from silently modifying structural facts.
Then ask a bilingual reviewer to compare source and target semantics, a subject expert to examine concepts, and a tactile reader or producer to check accessibility and physical usability where available. These are complementary roles. A person fluent in the target language may not know a specialist diagram convention; a tactile producer may not know the source vocabulary; a technical expert may not know the person’s preferred description style. Their findings should be recorded and reconciled rather than averaged.
Finally test with authentic questions. For a tactile bar chart, ask which category is highest and by how much. For a map, ask which route connects two places. For a circuit, ask whether two components are on the same branch. For a geometry proof, ask which segments are marked equal. Compare the answers obtainable from the original and translated resources. A reviewer who approves a translation merely because the text reads smoothly has not yet tested meaning preservation.
Common errors and how to recognize them early
A label can be correct but misplaced. A shape can be identified accurately but described from the wrong viewpoint. A legend can be translated without preserving the correspondence between texture and concept. A description can infer exact values from a decorative or schematic proportion. An abbreviation can collide with another label in the target language. An arrow can be read as motion when it actually means relationship, or as causation when it simply means sequence. Every failure has a different repair path, so avoid a generic ‘proofread for accuracy’ instruction.
One useful auditing technique is to separate linguistic checks from structural checks. Linguistic checks ask whether labels are grammatical, familiar and faithful. Structural checks ask whether all connections, directions, quantities, category memberships and orientation cues remain true. Accessibility checks ask whether a reader can actually access those facts in the target format. A professional output passes all three; passing one never guarantees the others.
Translation practice for learners and educators
Start with a three-shape drawing: a circle inside a square with an arrow pointing from the circle to a triangle. Write a source description, translate it, and ask another person to draw only from the target. Compare the resulting shapes. Repeat with more demanding distinctions: touching versus overlapping, left of versus below, connects versus crosses, above in the page versus above in a hierarchy. The exercise trains relational language rather than vocabulary memorization alone.
Build a glossary that gives each spatial term a definition, a context sentence and a contrast term. Examples include adjacent versus connected, parallel versus intersecting, higher versus larger, scale versus schematic proportion, and clockwise versus counterclockwise. Practise active retrieval by hiding the glossary and describing a fresh diagram, then checking the result against the source. A strong learner can explain why their chosen preposition or verb preserves the figure’s relationships.
Questions about translating tactile diagrams
Can artificial intelligence describe a tactile image automatically? A system may help propose descriptions of a clear source image or extracted label text, but the result must be checked against the actual figure, key and task. An image model cannot safely infer raised texture distinctions, Braille encoding or missing geometry merely from an incomplete photograph.
Can a long description replace tactile production? Sometimes it provides sufficient access for a particular task and reader, but not always. Spatial exploration can itself be the learning objective. Work with the intended user and relevant specialists to choose formats rather than assuming one universal solution.
Should the target diagram mirror its layout for a right-to-left language? The language’s text order and a diagram’s geometry are separate questions. Reversing the actual diagram may change directions, anatomy, coordinates or historical facts. Reflow labels and accompanying prose as needed without changing spatial truth.
Who should review a multilingual tactile map? Ideally, someone competent in the source and target languages, the relevant domain and tactile reading or production should review, with direct user testing wherever possible. One person may cover several roles, but any missing expertise should be acknowledged.
Useful source material and connected learning routes
The Braille Authority of North America’s Guidelines and Standards for Tactile Graphics, 2022 provide detailed practice on producing readable tactile diagrams. The W3C Web Accessibility Initiative’s guide to complex images distinguishes short identifying text from detailed explanations of essential image information. Both are useful when preparing or reviewing a bilingual figure package. Neither replaces consultation with the actual reader.
Braille Authority of North America: tactile graphics standards
W3C Web Accessibility Initiative: describing complex images
For the language side, eduKateSG’s How to Translate Easily Series Index connects related methods of translating meaning, context and accessible materials. Its How English Works guide shows why isolated vocabulary is insufficient when relationships must survive the transfer. The Vocabulary and Meaning learning route is useful for distinguishing precise technical terms from everyday near-synonyms. Readers moving between languages should practise describing the same structure with more than one expression and check whether both versions imply the same spatial relations.
eduKateSG: How to Translate Easily Series Index
eduKateSG: How English Works, Vocabulary and Meaning
Translation has succeeded when the reader can identify the same relationships, trace the same route, compare the same quantities and understand the same concept using the target-language resource. It has not succeeded merely because the captions sound fluent. Keep the graphic’s evidence intact, preserve the reader’s access to spatial meaning and make unresolved ambiguities explicit.