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DIN Standards Committee Technical Fundamentals

Abstract

This document specifies the most important design, dimensional and performance requirements for internal micrometers with 3-line contact with measuring capacities up to 500 mm, having 0,01 mm scale intervals or digital increments and a span of 25 mm and their testing.

Begin

2025-12-18

Planned document number

DIN 863-4

Project number

15202971

Responsible national committee

NA 152-03-02-07 UA - Length checking practice except coordinate, form and surface measuring technology as well as characteristics of screw threads  

previous edition(s)

Verification of geometrical parameters - Micrometers - Part 4: Internal micrometers; concepts, requirements, testing
1999-04