noun
error span; margin of error
Technical term used in computing and measurement contexts to describe the range within which an error may occur.
この計算では、誤差幅を±0.5%に抑える必要がある。
In this calculation, the error span must be kept within ±0.5%.
許容誤差 is a tolerance or permissible error, often used in engineering; 誤差幅 is a more general term for the error range.
Compound of 誤差 (error) and 幅 (width, range). The term is a straightforward technical coinage.