دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the range of variation permitted in maintaining a specific dimension in machining a part. For example, a shaft measurement could be 2.000 inches +0.001 (50 millimetres +0.025). This means that any measurement from 1.999 inches to 2.001 inches (49.975 millimetres to 50.025 millimetres) would be acceptable.