: Gauges are typically constructed from durable materials like alloy tool steel (e.g., SKS31) with high hardness (HRC 58–64) to resist wear during repeated inspections.
This standard applies to plain limit gauges and reference disks for gap gauges intended for workpieces with: : Dimensions not exceeding 500 mm . jis b 7420 pdf
: The standard defines how to determine if a part is acceptable. A GO gauge should pass through or over the workpiece, while a NOT GO gauge should not. : Gauges are typically constructed from durable materials