National Metrology Standard (JJ)下载-第1页-标准下载网-www.bzxz.net

Calibration Specification for Reinforced Concrete Covermeter and Floorslab Thickness Tester

JJF 1224-2009
Verification Regulation of Ball Pneumatic Dead Weight Tester

JJG 942-2010
Designation and Classification Code for Measuring Instruments

JJF 1051-2009
Measurement and Test Norm of Thermostatic Bath’s Metrological Characteristics

JJF 1030-2010
Verification Regulation of Test Equipment for Vehicle Speed Radar Measurement Meters

JJG 771-2010
Calibration Specification for Gear Dual-flank Meshing Measuring Instrument

JJF 1233-2010
Calibration Guideline of the Temperature Block Calibrators

JJF 1257-2010
Raw Cotton Moisture Tester

JJG 845-2009

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