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Industry Standard: JJ, JJ/T, JJT
              
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Std ID Description (Standard Title)
JJG 541-1988 Verification Regulation of Body Type Shock Testing Machine
JJG 541-2005 Verification Regulation of Falling Body Type Shock Testing Machines
JJG 54-1984 Verification Regulation of Length Measuring Machine
JJG 542-1997 Verification regulation of the gold-platinum thermocouple
JJG 543-1988 (Chinese Industry Standard)
JJG 543-1996 Verification Regulation of Electrocardiograph and Eletroencephalograph
JJG 543-2008 Verification regulation of electrocardiograph
JJG 544-1997 Verification Regulation of Pressure Contuoller
JJG 544-2011 Verification Regulation of Pressure Controllers
JJG 545-1988 Verification Regulation of Frequency Comparator
JJG 545-2006 Frequency Comparator
JJG 545-2015 Verification Regulation of Frequency Comparators
JJG 546-1988 Verification Regulation of DC Comparison Bridge
JJG 546-2010 Verification regulation of DC comparison bridges
JJG 547-1988 Verification Regulation of Dust Particles Counter
JJG 548-1988 Verification Regulation of cold Atomic Fluorometer For Determination of Mercury
JJG 548-2004 Verification Regulation of Mercury Analyzers
JJG 549-1988 Verification regulation of square wave polarograph
JJG 550-1988 Verification Regulation of Scanning Electron Microscope
JJG 551-1988 Verification Regulation of Sulfur Dioxide Analyzer
JJG 551-2003 Verification regulation of sulfur dioxide gas detectors
JJG 55-1984 Verification Regulation of Horizontal Metroscope
JJG 552-1988 Verification Regulation of the Chambers for Counting Blood Cells
JJG 553-1988 Verification regulation of blood gas acid. Base analyser
JJG 554-1988 Verification Regulation of Chromatic Luminance Meter
JJG 555-1988 Leather Tension Testing Machine
JJG 555-1996 General Verification Regulation for Nonautomatic Weighing Instrument
JJG 556-1988 Verification Regulation of Axial Load Fatigue Testing Machines
JJG 556-2011 Verification Regulation of Axial Force Fatigue Testing Machines
JJG 557-1988 Verification Regulation of Standard Torsionmeter
JJG 557-2011 Verification Regulation of Standard Torque-meters
JJG 558-1988 Verification Regulation of The Measure for Drinking
JJG 558-2006 Verification Regulation of Measure for Drinking
JJG 559-1988 Verification regulation of speed and mileage metre for cars
JJG 560-1988 Verification Regulation of Suspend Hand Electronic Beltseale
JJG 561-1988 Verification regulation of Model RJ-3 Near -Zone Electric -Field Measuring Instruments
JJG 561-2016 Near-Zone Electric-field Measuring Instruments
JJG 56-1984 Toolmakers Microscope
JJG 56-2000 Verification Regulation of Universal Measuring Microscopes and Makers Microscopes
JJG 562-1988 Verification regulation of Model DCHY -801 Near -Zone Electric -Field Measuring Instruments
JJG 563-1988 Verification Regulation of High Voltage Capacitance Bridge
JJG 563-2004 Verification Regulation of High Voltage Capacitance Bridges
JJG 564-1988 Verification Regulation of Machine Batching Scale
JJG 564-2002 Verification Regulation of Automatic Gravimetric Filling Instruments
JJG 565-1988 Verification Regulation of Electronic Predetermined Weight Scale for Bulk Grain
JJG 566-1989 Electromagnetic Flowmeter
JJG 566-1996 Verification Regulation of Vemiter Caliper for Coil of Generator
JJG 566-2010 Verification regulation of vernier caliper for coil of generator
JJG 567-1989 Verification Regulation for Test Weight Cars of Railway Track Scale
JJG 567-2012 Verification Regulation of Test Vehicle for Rail-weighbridges
JJG 568-1988 Verification Regulation of Wear Gauge for Fixed Railway Frog
JJG 569-1988 Verification Regulation of Alternating-Current Watt-Hour Meters with Maximum Demand Indicator
JJG 569-2014 Verification Regulation of Electricity Meters with Maximum Demand Measurement Functions
JJG 570-1988 Verification Regulation of Capacitance Comparator
JJG 570-2006 Verification Regulation of Capacitance Comparators
JJG 571-1988 Verification Regulation of Measuring Microscope
JJG 571-2004 Verification Regulation of Reading Microscope and Measuring Microscope
JJG 57-1984 (Optical dividing head test procedures)
JJG 57-1999 Verification Regulation of Optical Digital Dividing Head
JJG 572-1988 Verification Regulation of the Electronic -Automatic Balanced Recorder With PID -Action
JJG 573-1988 Verification Regulation of Capsule Pressure Gauges
JJG 573-2003 Verification Regulation of Capsule Pressure Gauges
JJG 574-1988 Verification Regulation of Impression Tonometers
JJG 574-2004 Verification Regulation of Impression Tonometers
JJG 575-1994 Verification Regulation of Ge-γ-ray Spectrometer for Activity Measurement Device of Volu-minous Source
JJG 576-1988 Verification Regulation of Working Tungsten-Rhenium Thermocouple
JJG 577-1994 Verification Regulation of Diaphragm Gas Meters
JJG 577-2005 Diaphragm Gas Meters
JJG 577-2012 Verification Regulation of Diaphragm Gas Meters
JJG 579-1988 (Chinese Industry Standard)
JJG 579-1998 Verification Regulation of Trial Case Lenses
JJG 579-2010 Verification regulation of trial case lenses
JJG 580-1988 Focimeters
JJG 580-1996 Verification Regulation of Focimeters
JJG 580-2005 Verification Regulation of Focimeters
JJG 581-1988 (Chinese Industry Standard)
JJG 581-1999 Verification regulation of laser for medicine
JJG 581-2016 Lasers for Medicine
JJG 58-1984 (Chinese Industry Standard)
JJG 58-1996 Verification Regulation of Radius Gauge
JJG 58-2010 Verification regulation of radius gauges
JJG 582-1988 (10-60kVX therapeutic levels of radiation dosimeter verification procedures)
JJG 583-1988 Verification Regulation of Cupping Testing Machine
JJG 583-2010 Verification regulation of cupping testing machine
JJG 584-1989 Cales for Selling Grain
JJG 585-1989 Verification Regulation of Water Meters at High Pressure
JJG 586-1989 Verification Regulation of Soap Film Standard Facility on Gases Flow
JJG 586-2006 Verification Regulation of Soap Film Flow meter
JJG 587-1989 (Working with a thermocouple vacuum gauge test procedures)
JJG 587-1997 Verification regulation of float-type tide gauge
JJG 587-2016 Float-type Tide Gauge
JJG 588-1996 Verification Regulation of Impulse Peak Voltmeter
JJG 589-1989 Verification Regulation of 60Co Teletherapy Radiation Source
JJG 589-2001 Verification Regulation of Radiation Source Used in the External Beam Radiotherapy
JJG 589-2008 Verification regulation of medical electron accelerator radiation source
JJG 590-1989 60~250k VX -Ray Therapeutic Radiation Source
JJG 591-1989 γ-Ray Radiation Source (for Radiation processing)
JJG 59-1978 (Chinese Industry Standard)
JJG 59-1990 Standard Piston Gauge (Grade II, III)
JJG 59-2007 Verification Regulation of Piston Gauge