Tolerance is the allowable variation around a nominal dimension, geometric feature, or process parameter, typically expressed as upper and lower limits or a plus/minus band. It appears on engineering drawings, inspection plans, first-article reports, and process capability studies, where translators must preserve units, sign conventions, and the distinction between unilateral and bilateral limits because a wrong value can make a conforming part appear defective or vice versa.
In localization work, tolerance appears in engineering drawings, inspection checklists, quality manuals, and first-article inspection reports. It often occurs in dimension tables, notes such as “±0.1 mm,” fit designations, and process capability data. Translators must handle it consistently across drawing notes and body text, especially when source language uses abbreviations for geometric tolerances or references to general tolerance standards.
A frequent error is translating “tolerance” as a vague “allowance” or “margin,” losing the specified upper and lower limits. Another is dropping or swapping plus/minus signs, decimal places, or unit conversions when copying values into translated inspection documents. These errors matter because a shifted limit can make a conforming part appear out of spec or hide a nonconformance, which has direct quality and assembly consequences.
The EU Machinery Directive requires documentation in the language of the destination market. Safety-related terms must map exactly to the wording of the governing standard.
Angel Translation locks terms like this into a project terminology base before expert review begins, so the same source term resolves to the same target term across every document in a submission — and stays consistent in the next revision. See the 8-step AI + expert workflow.
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