National Metrological Verification Regulations of the People's Republic of China
Scope
This procedure applies to the initial verification, subsequent verification and in-use inspection of measuring tools used in the manufacturing of railway freight train saddles (hereinafter referred to as manufacturing measuring tools).
JJG(铁道) 200.1-2009 Referenced Document
JJG 34-2008 Verification Regulation of Dial Gauges (dial and digital)