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ISO 2768 · 286 · 1101 · 21920Machining & tolerances
Tolerances & GPS — ISO 2768, 286, 1101, 21920
What is it?
The language of precision on technical drawings: general tolerances (ISO 2768/22081), fits like H7/g6 (ISO 286), geometric tolerancing GD&T (ISO 1101) and surface texture (ISO 21920, successor of ISO 1302).
What evidence should a candidate have?
Vocational diplomas, measurement protocols/CMM reports, and references to tight-tolerance work (IT6–IT8) on drawings the candidate read independently.
Why it matters for staffing
A CNC operator who truly reads GPS drawings sets up parts alone; one who doesn't needs constant supervision — a huge productivity difference.
Official sources
Used in trade modules
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