Plain limit gauges. standard by Japanese Industrial Standard / Japanese Standards Association , 01/01/1997. Accuris Standards Store JIS B 7420 - 1997-03-31 - DIN Media
The standard, officially titled "Plain Limit Gauges," is a Japanese Industrial Standard (JIS) that specifies the requirements for dimensional inspection tools used for holes and shafts. It provides the technical basis for ensuring that parts manufactured for machinery and precision equipment fall within their specified tolerance zones. Scope and Application jis b 7420 pdf
The standard is technically aligned with but includes specific Japanese measuring methods and additional criteria for acceptance/rejection in trade. Plain limit gauges