allowable error; tolerance
Technical term used in engineering, measurement, and quality control for the permissible range of deviation.
The allowable error of this measuring instrument is ±0.5%.
The allowable tolerance is clearly stated on the blueprint.
公差 is a more general term for tolerance in manufacturing, while 許容誤差 specifically refers to permissible error in measurement or output.
Compound of 許容 (allowance, permission) and 誤差 (error, deviation).