GB/T 8177-2004 Two-point internal micrometer

This standard specifies the terms and definitions, types and basic parameters, requirements, inspection methods, marking and packaging of two-point internal micrometers (including "internal micrometers" and "single-rod internal micrometers"). This standard is applicable to integral structures or two-point internal micrometers with extension rods (in accordance with the Abbe principle) with graduation values ​​of 0.01mm, 0.001mm, 0.002mm, 0.005mm, a micrometer screw pitch of 0.5mm or 1.0mm, and a measurement upper limit lmax of no more than 6000mm. GB/T 8177-2004 Two-point internal micrometer GB/T8177-2004 Standard download decompression password: www.bzxz.net

1C%17.04.30
National Standard of the People's Republic of China
GH1B177-2004
Recommended GB/1S177187, GB/T $G57—1988 Two-point internal micrometer
lnlernal micronicters with to-point conlart2004-02-10 Issued bzxZ.net
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China
2004-08-01 Implementation
GB/T8177-2004
This standard is the source of IS/IDIS!I21 Geometrical Technical Specifications for Length Measurement or Instruments: Two-point Internal Micrometer and Technical Requirements 2 (1396 English version) GB/T8177-19873 Internal Micrometer 3 and /T957-1988 Single Rod Internal Micrometer 3 are revised. The main differences are as follows: One installation (13 [1.12000) for the overall arrangement of the type to "change and increase the continent Specifications from 500mm to 1000mm
increase the requirements for the accuracy and roughness control of the measuring blood, increase the requirement for the graduation value of 0.(5rm,
wood standard from 3 can, replace [81771987 inside micrometer 3 and B/9057-:03 sheep rod type internal light element and 3
wood standard G/T177-97/3716488 than the industrialization, each inside diameter micrometer and single style inside two-point micrometer are combined, collectively referred to as two-point inside diameter micrometer: increase the required number of minutes to n.(wlurau.002mnu.005mm in this version 1); increase the distance requirement of the micrometer screw (the second clause of B/TW57-19HH; 1 of the wood version); - increase the measuring civil specification
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