To ensure durability and usability, JIS B 7420 mandates specific design features:
If your laboratory or factory is accredited to ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories), you cannot guess tolerances. You must have the reference standard on hand. The serves as your master document for defining acceptance limits during gauge calibration. jis b 7420 pdf
: Used to check the MML. For a hole, this is the minimum permissible size; for a shaft, it is the maximum permissible size. To ensure durability and usability, JIS B 7420
: Another reliable source for purchasing the 1997 English translation in PDF format. Related Standards : Used to check the MML
: It follows the Taylor Principle , where "GO" gauges check the maximum material limit and "NOT GO" gauges check the minimum material limit.
: Specifically covers grades IT6 to IT16 as defined in JIS B 0401.
