2019JJG 201-2018 Calibration regulations for indicating measuring tools and calibrating instruments
2008JJG 201-2008 Verification Regulation of Tester for Dial Indicator Gauges
1996JJG 271-1996 Verification Regulation of Digital Display Tester for Dial Indicator
JJG 271-1996 Verification Regulation of Digital Display Tester for Dial Indicator was changed to JJG 201-2008 Verification Regulation of Tester for Dial Indicator Gauges.