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GB/T 46636-2025Design and metrological characteristics of callipers (English PDF)

卡尺的设计和计量特性

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Issued by

State Administration for Market Regulation

Level / Type

National · Recommended

Issue date

October 31, 2025

Implementation date

May 1, 2026

Scope

GB/T 46636-2025 is the English-translated version of 卡尺的设计和计量特性.

GB/T 46636-2025 — This document specifies the following two most important design and metrological characteristics of calipers. ---With analog indicators. vernier scale or circular dial; ---With digital display. Digital display screen.

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Document preview — GB/T 46636-2025

National Standard of the People's Republic of China

ICS: 17.040.30
Classification: J 42

Issued by: State Administration for Market Regulation

Preface
1 Scope
2 Normative References
3 Terms and Definitions
4 Design Features
4.1 General Design and Naming
4.2 Dimensions
5 Measurement characteristics
5.1 Overview
5.2 Rated operating conditions
5.3 Reference Point
5.4 Detection Methods
5.5 Local contact indication error E of the measuring surface (constrained by EMPE)
5.6 Displacement error S (constrained by SMPE)
5.7 MPE value
5.8 Special Cases
6 Verification of conformity with specifications 9.
6.1 General Requirements
6.2 Measurement Uncertainty
6.3 Judgment Rule
7 Mark
Appendix A (Informative) Guidelines for Calibration of Metrological Characteristics
A.1 Overview
A.2 Line contact error
Appendix B (Normative) Specifications for MPE Values of Metrological Characteristics
Appendix C (Informative) Relationship with GPS Matrix Model
C.1 Overview
C.2 Information about this document and its use
C.3 Position in the GPS matrix model
C.4 Relevant Standards
Reference

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

Drafting.

This document is equivalent to ISO 13385-1:2019 "Geometrical specifications for products (GPS) - Length measuring equipment - Part 1: Calipers".

Design and measurement characteristics.

The following minimal editorial changes have been made to this document.

---To align with existing standards, the standard name has been changed to "Design and Metrological Characteristics of Calipers".

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed by the China Machinery Industry Federation.

This document was prepared by the National Technical Committee on Standardization of Measuring Instruments and Gauges (SAC/TC132) and the National Technical Committee on Standardization of Product Geometric Specifications.

It is jointly managed by the committee (SAC/TC240).

1 Scope

This document specifies the following two most important design and metrological characteristics of calipers.

---With analog indicators. vernier scale or circular dial;

---With digital display. Digital display screen.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

ISO 14253-1 Product Geometry Specification (GPS) - Measurement and Inspection of Workpieces and Measuring Equipment - Part 1: Verification of conformity according to specifications Note. GB/T 18779.1-2022 Product Geometric Specification (GPS) - Measurement and Inspection of Workpieces and Measuring Equipment - Part 1: Verification of Conformity According to Specifications or the rules for determining nonconformity (ISO 14253-1:2017, IDT) ISO 14253-5 Product Geometry Specification (GPS) - Measurement and Inspection of Workpieces and Measuring Equipment - Part 5: Indicating Measuring Instruments [inginstruments] Note. GB/T 18779.5-2020 Product Geometric Specification (GPS) - Measurement and Inspection of Workpieces and Measuring Equipment - Part 5: Indicating Measuring Instruments the inspection uncertainty (ISO 14253-5:2015, MOD) ISO 14978:2018 Product Geometry Specification (GPS) - General Concepts and Requirements for GPS Measuring Equipment Note. GB/T 24634-2009 Product Geometric Specification (GPS) General Concepts and Requirements for GPS Measuring Equipment (ISO 14978:2006, IDT) ISO/IEC Guide 98-3 Measurement Uncertainty Part 3: Guidelines for the Expression of Measurement Uncertainty (GUM..1995)

1995)

Note. GB/T 27418-2017 Evaluation and expression of measurement uncertainty (ISO/IEC Guide 98-3.2008, MOD)

3 Terms and Definitions

The terms and definitions defined in ISO 14978 and ISO/IEC Guide 99, as well as the following terms and definitions, apply to this document.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 14 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 14253 · ISO 14978

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