National Metrological Verification Regulations of the People's Republic of China
Latest
JJG 1079-2013
Scope
This procedure applies to the initial calibration, subsequent calibration and in-use inspection of the comprehensive calibration device for railway track signal testing equipment (hereinafter referred to as the comprehensive calibration device).
JJG 1079-2013 history
2013JJG 1079-2013 Comprehensive Calibrators for Test Equipment of Railway Track Signal