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JJG 998-2005Verification Regulation of Laser Measuring Instruments for Small Angles (English PDF)

激光小角度测量仪检定规程

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine

Level / Type

National · Mandatory

Issue date

September 5, 2005

Implementation date

December 5, 2005

Scope

JJG 998-2005 is the English-translated version of 激光小角度测量仪检定规程.

JJG 998-2005 is the Chinese standard "Verification Regulation of Laser Measuring Instruments for Small Angles". Issued on 2005-09-05, in force from 2005-12-05.

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Document preview — JJG 998-2005

National Standard of the People's Republic of China

ICS: 17.040.30

1 Scope
2 Citations
3 Overview
4 Metrology performance requirements
4.1 Drift
4.2 Angle repeatability
4.3 Zero-grading error
5 General technical requirements
5.1 Appearance
5.2 Interaction of various parts of the instrument
6 Measuring instrument control
6.1 Verification conditions
6.2 Verification project
6.3 Verification method
6.4 Processing of verification results
6.5 Verification period

1 Foreword

JJG 998-2005 was issued by General Administration of Quality Supervision, Inspection and Quarantine on 5 September 2005 and has been in force since 5 December 2005.

The JJG prefix, without a suffix, marks a mandatory standard: within its scope, compliance is required.

The document runs to 15 pages in English translation.

2 Scope Preview

JJG 998-2005 falls under ICS 17.040.30, in the field of metrology and measurement.

This catalogue holds 361 other JJG standards in that field.

In this catalogue, JJG standards carry edition years from 1958 to 2025.

3 About this standard

Issued by: General Administration of Quality Supervision, Inspection and Quarantine

English translation: about 15 pages (approximate)

4 Classification and status

International classification (ICS): 17.040.30

Chinese Standard Classification (CCS): A 52

Prefix JJG: mandatory standard.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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