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ANSI B4 (1) .3-1978 米制尺寸制品的一般公差 by gavinhu82 is a document available to read on EtoBox.

What is ANSI B4 (1) .3-1978 米制尺寸制品的一般公差 about?

The document outlines the American National Standard ANSI B4.3-1978 for general tolerances applicable to metric dimensioned products. It specifies how to indicate tolerances on drawings, including methods for linear and angular dimensions, and provides tables for permissible variations. The standard was developed to align with ISO 2768 and was approved by the American National Standards Institute in March 1978.

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