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Industry Standard: JJ, JJ/T, JJT
              
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Std ID Description (Standard Title)
JJG 113-2013 Verification Regulation of Metallic Rockwell Hardness Reference Blocks (Scales A, B, C, D, E, F, G, H, K, N, T)
JJG 114-1990 (Chinese Industry Standard)
JJG 114-1999 verification regulation of beckmann
JJG 115-1990 (Chinese Industry Standard)
JJG 115-1999 Verification Regulation of the Standard Copper/Copper-Nickel Thermocouple
JJG 115-2003 The Railway passenger Hotbox alarm VRof
JJG 116-1978 (Chinese Industry Standard)
JJG 116-1983 Verification Regulation of Straight Edge
JJG 116-1994 Verification Regulation Straight Edge
JJG 117-1978 (Chinese Industry Standard)
JJG 117-1991 Verification Regulation of Flat Plate
JJG 117-1994 Verification Regulation of Plates
JJG 117-2005 Tablet VRof
JJG 117-2013 Verification Regulation of Surface Plates
JJG 118-1986 (Chinese Industry Standard)
JJG 118-1996 Verification Regulation of Micro-Kator
JJG 118-2010 Verification regulation of microcator
JJG 119-1973 (Chinese Industry Standard)
JJG 119-1984 Verification Regulation for Laboratory pH Meter
JJG 119-2005 Verification Regulation of Laboratory pH Meters
JJG 1-1989 (Steel ruler test procedures)
JJG 1-1999 Verification regulation of steel rule
JJG 120-1990 Verification Regulation of Wave Form Monitor
JJG 120-2011 Gauge Used in Measuring the Distance Between Acting Centres of Journal Load of Wheels - set for Coach
JJG 121-1990 Verification Regulation of Video Noise Meter
JJG 12-1987 Verification Regulation of Graduated Cantrifuge Tubes, Graduated Test Tubes Blood Sugar Tubes and Blood Digestion Tubes
JJG 122-1986 Verification regulation of the precise true RMS voltmeter type DO6
JJG 123-1976 (Chinese Industry Standard)
JJG 123-1988 DC Potentiometers
JJG 123-2004 Verification Regulation of D.C. potentiometers
JJG 123-2005 Measuring Ruler for Difference of Wheels Set Position and Brake Discs Set Position of Railway Vehciles
JJG 124-1982 (Chinese Industry Standard)
JJG 124-1993 Verification Regulation of Amperemeter Voltmeter Wattmeter and Ohmmeter
JJG 124-2005 Amperemeter, Voltmeters, Wattmeters and Ohmmeters
JJG 125-1976 (Chinese Industry Standard)
JJG 125-1986 DC bridges
JJG 125-1991 (Frequency selection (broadband) level meter test procedures)
JJG 125-2004 Verification Regulation of D.C.Bridges
JJG 126-1991 (Level oscillator verification procedures)
JJG 126-1995 Measuring transducers for converting a.c. electrical quantities into d.c. electrical quantities
JJG 127-1986 Verification Regulation of Model HP 4191 A RF Impedance Analyzer
JJG 127-1991 (Flat dysprosium type variable attenuator test procedures)
JJG 128-1973 (Chinese Industry Standard)
JJG 128-1989 V. R. of Standard Mercury-in-Glass Thermometer (Grade II)
JJG 128-1991 (Nuclear humidity, density tester test procedures (Trial))
JJG 128-2003 Standard mercury-in-glass thermometers (Grade Ⅱ)
JJG 129-1976 Verification Regulation of First-class Standard Piston Pressure Gauge
JJG 129-1990 Verification Regulation of Standard Piston-Type Pressure Gauge (Grade I)
JJG 129-2004 Detecting Device for Overload and Unbalance Load of Rail Wagons
JJG 130-1972 (Chinese Industry Standard)
JJG 130-1984 Verification Regulation of Liquid-in-Glass Thermometers for Working
JJG 130-2003 Rail ultrasonic flaw detector VRof
JJG 130-2004 Liquid-in-Glass Thermometers for Working
JJG 130-2011 Verification Regulation of Liquid-in-Glass Thermometers for Working
JJG 131-1973 (Chinese Industry Standard)
JJG 131-1991 Verification Regulation of Electric Contact Mercury-in-Glass Thermometer
JJG 131-2004 Verification Regulation of the Electric Contact Mercury-in-Glass Thermometers
JJG 13-1986 (Chinese Industry Standard)
JJG 13-1997 Verification regulation of analogue indication weighing instrument
JJG 13-2009 Verification Regulation of Routine Analytical Cigarette-smoking Machine
JJG 13-2016 Analogue Indicating Weighing Instruments
JJG 132-1987 (Chinese Industry Standard)
JJG 132-1994 Verification Regulation of Composite Angle Gauge
JJG 132-2005 Speedmeter of Train
JJG 133-1987 Verification Regulation of Tank Car Volume
JJG 133-2005 Verification Regulation of Tank Cars Capacity
JJG 133-2016 Road Tankers Capacity
JJG 134-1987 Verification Regulation of Magne-toelectric Type Velocity Transducer
JJG 134-2003 Verification Regulation of Electromagnetic Velocity Transducer
JJG 136-1986 Verification Regulation of Type CJS-2, 3, 4 Capacitor Dielectric Loss Meter
JJG 136-1992 (Axles full length measurement scale test procedures)
JJG 137-1986 Verification regulation of small capacitance measuring instrument
JJG 138-1986 Verification regulation of accurate capacitance measuring instrument
JJG 139-1991 (Chinese Industry Standard)
JJG 139-1999 Verification Regulation of Universal Tension and Compression Testing Machine
JJG 139-2014 Verification regulation of Tension, Compression and Universal Testing Machines
JJG 140-1991 Verification Regulation of Railway Tank Car Volume
JJG 140-1998 Verification Regulation of the Volume of Railway Tank Car
JJG 140-2008 Verification Regulation of Railway Tankers Volume
JJG 140-2010 Rail Thermometer
JJG 141-1988 (Working with 10 platinum and rhodium, platinum and rhodium platinum thermocouple 13)
JJG 141-1993 (Railway Torque Wrench Calibrator verification procedures)
JJG 141-2000 Verification Regulation of Working Noble Metal Thermocouples
JJG 141-2013 Verification Regulation of Working Noble Metal Thermocouples
JJG 14-1985 Movable Beam Balance
JJG 14-1997 Verification regulation of nonself-indicating weighing instrument
JJG 14-2016 Non-self-indicating Weighing Instruments
JJG 142-1987 Verification Regulation of a Static Railway Track Scale
JJG 142-2002 Verification Regulation of Nonself-Indicating Rail-Weighbridge
JJG 143-1973 (Chinese Industry Standard)
JJG 143-1984 Verification regulation of standard Ni-Cr/Ni-Si thermocouple
JJG 144-1982 Verification Regulation for Standard Dynamometers
JJG 144-1992 Verification Regulation of Standard Dynamometer
JJG 144-2007 Verification Regulation of Standard Dynamometers
JJG 145-1973 (Chinese Industry Standard)
JJG 145-1982 Verification Regulation of Pendulum Impact Testing Machine
JJG 145-2007 Pendulum Impact Testing Machines
JJG 145-2011 Special Measuring Tools for Axle Journal in the Railway Rolling Stocks
JJG 146-1994 Verification Regulation of Gauge Block
JJG 146-2003 Verification Regulation of Gauge Blocks