标准号:IS 1105-1957
发布日期:1957/12/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard gives a simplified set of rules for the precise conversion of dimensions from inches to millimetres and vice versa to ensure interchangeability. The rules are meant for use particularly in the work of engineers, designers, draughtsmen and shop-workers.1.1.1 The following categories of dimensions are covered:a) Simple Feature Dimensionsb) Positional Dimensionsc) Datum Dimensionsd) Untoleranced Dimensionse) Standard Feature Dimensions