: It follows the Taylor Principle , where "GO" gauges check the maximum material limit and "NOT GO" gauges check the minimum material limit.
The standard provides specific formulae (found in Table 5 of the document) and attached tables to calculate the exact size of a limit gauge based on the workpiece's nominal size and tolerance grade. When dimensions reach five or more decimal places, they are rounded to four places according to . How to Access the JIS B 7420 PDF jis b 7420 pdf
The primary source for JIS Standards.
Once you have obtained the legitimate PDF, here is how to integrate it effectively: : It follows the Taylor Principle , where
The permissible deviation from flatness is expressed in micrometers (µm) per square meter. Smaller plates have tighter tolerances relative to their size. How to Access the JIS B 7420 PDF
The PDF document (JIS B 7420) is dense with technical data. When you obtain the official copy, you should expect to find: