ISO 3611:2023
Geometrical product specifications (GPS) — Dimensional measuring equipment — Design and metrological characteristics of micrometers for external measurements
This document provides the most important design and metrological characteristics of micrometers for external measurements:
— with analogue indication;
— with digital indication: mechanical or electronic digital display.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Design characteristics
4.1 General design and nomenclature
4.2 Dimensions
4.3 Types of indicating device
4.3.1 General
4.3.2 Analogue indicating devices
4.3.3 Digital indicating devices
4.4 Frame
4.5 Measuring force limiting device
5 Metrological characteristics
5.1 General
5.2 Rated operating conditions
5.3 Reference point
5.4 Test methods
5.5 Length measurement error, E (limited by EMPE)
5.5.1 General
5.5.2 Test point selection
5.6 Variation in length measurement error, V (limited by VMPE)
5.6.1 General
5.6.2 Number of tests
5.6.3 Testing with optical parallels
5.7 Measuring forces
5.8 Specifications
5.8.1 General
5.8.2 Classification system
6 Determination of conformity to specifications
6.1 General
6.2 Measurement uncertainty
6.3 Decision rule
7 Marking
Annex A (informative) Calibration guidelines for metrological characteristics
Annex B (informative) Notes on use
Annex C (informative) Relation to the GPS matrix model
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Design characteristics
4.1 General design and nomenclature
4.2 Dimensions
4.3 Types of indicating device
4.3.1 General
4.3.2 Analogue indicating devices
4.3.3 Digital indicating devices
4.4 Frame
4.5 Measuring force limiting device
5 Metrological characteristics
5.1 General
5.2 Rated operating conditions
5.3 Reference point
5.4 Test methods
5.5 Length measurement error, E (limited by EMPE)
5.5.1 General
5.5.2 Test point selection
5.6 Variation in length measurement error, V (limited by VMPE)
5.6.1 General
5.6.2 Number of tests
5.6.3 Testing with optical parallels
5.7 Measuring forces
5.8 Specifications
5.8.1 General
5.8.2 Classification system
6 Determination of conformity to specifications
6.1 General
6.2 Measurement uncertainty
6.3 Decision rule
7 Marking
Annex A (informative) Calibration guidelines for metrological characteristics
Annex B (informative) Notes on use
Annex C (informative) Relation to the GPS matrix model
Bibliography