This standard applies to plain limit gauges and reference disks for gap gauges intended for workpieces with: : Dimensions not exceeding 500 mm .
It accounts for the permissible wear of the gauge itself, ensuring that even as a gauge is used repeatedly, it stays within the "limit of maximum permissible gauge wear".
Manufacturers utilize JIS B 7420 to ensure interchangeability of parts. It is frequently referenced in the production of: : Such as engine pistons.
You can typically find the official standard through these channels: Official Sources Japanese Standards Association (JSA) is the primary publisher. Technical Libraries
