The standard provides detailed guidance on the manufacturing and inspection of these tools:

The Japanese Industrial Standard is the definitive technical standard for plain limit gauges . Published by the Japanese Standards Association (JSA) , this document provides the essential specifications for "Go" and "No-Go" gauges used to verify the dimensional accuracy of holes and shafts in manufacturing. Overview of JIS B 7420 jis b 7420 pdf

Ready to work with certified precision? Click here to purchase directly from the Japanese Standards Association. (Link placeholder – do not include actual live links in raw text). The standard provides detailed guidance on the manufacturing