This standard specifies the terms and definitions, types and basic parameters, requirements, test methods, inspection methods, signs and packaging of electronic digital display outer micrometers. This standard applies to electronic digital display outer diameter micrometers with resolution higher than or equal to 0.001mm, measuring range less than or equal to 30mm, and measuring range up to 500mm (hereinafter referred to as "electronic digital display micrometer").
GB/T 20919-2007 Referenced Document
GB 4208-1993 Degrees of protection provided by enclosure (IP code)
GB/T 17163 Glossary of terms for dimensional measuring instruments—General terms*, 2022-07-11 Update
GB/T 17164 Glossary of terms for dimensional measuring instruments—Product terms*, 2022-07-11 Update
GB/T 17626.2-1998 Electromagnetic compatibility--Testing and measurement techniques--Electrostatic discharge immunity test
GB/T 17626.3-1998 Electromagnetic compatibility--Testing and measurement techniques--Radiated, radio-frequency, electromagnetic field immunity test
GB/T 1800.4-1999 Limits and fits Tables of standard tolerance grades and limit deviations for holes and shafts
GB/T 2423.22-2002 Environmental testing for electric and electronic products--Part 2: Test methods Test N: Change of temperature
GB/T 2423.3-1993 Basic environmental testing procedures for electric and electronic products. Test Ca:Damp heat,steady state
GB/T 20919-2007 history
2018GB/T 20919-2018 External micrometer with electronic digital display
2007GB/T 20919-2007 External micrometer with electronic digital display