Secondary III • 2yr.
What is dimensional tolerance and what is the ± (+/-) symbol in technical drawings?
thankss
What is dimensional tolerance and what is the ± (+/-) symbol in technical drawings?
thankss
Explanation from Alloprof
This Explanation was submitted by a member of the Alloprof team.
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Dimensional tolerance is a representation on a technical drawing of the maximum deviation between a specified measurement and an actual measurement on the built part.
The dimensional tolerance is represented by the + / - (or ±) symbol placed between the actual measurement and the tolerance. Tolerance is the maximum degree of imprecision allowed on a part.
For example, a measurement of 25 ± 5 mm would indicate that the actual measurement could be between 20 and 30 mm.
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