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JJG 311-2014Focometers (English PDF)

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine

Level / Type

National · Mandatory

Issue date

February 14, 2014

Implementation date

August 14, 2014

Scope

JJG 311-2014 (Focometers) is available as an English-translated PDF.

JJG 311-2014 — Focometers

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Document preview — JJG 311-2014

National Standard of the People's Republic of China

ICS: 17.180
Classification: A 60
Replacing: JJG 311-1996

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

What this standard covers1
Document data2
Standards quoted by this document3

What this standard covers

This Standard specifies the focal length of the instrument's initial verification, verification and subsequent use of checks.

Document data

International classification (ICS): 17.180.

Chinese classification (CCS): A60.

Estimated length of the Chinese original: 22,252 words.

Supersedes the earlier edition JJG 311-1996.

Standards quoted by this document

GB/T 13962-2009

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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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