GB 11533-1989The standard logarithmic visual acuity charts (English PDF)
标准对数视力表
GB 11533 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| GB 11533-2011 | Standard for logarithmic visual acuity charts | Valid |
| GB 11533-1989 | The standard logarithmic visual acuity charts | Obsolete |
GB 11533-1989 is obsolete. It has been replaced by GB 11533-2011. This page sells the obsolete edition, for projects and contracts that still cite it.
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Issued by
State Bureau of Technical Supervision
Level / Type
National · Mandatory
Issue date
March 27, 1989
Implementation date
May 1, 1990
Scope
GB 11533-1989 is the English-translated version of 标准对数视力表.
GB 11533-1989 is the Chinese national standard "The standard logarithmic visual acuity charts". It was issued on March 27, 1989 by the State Bureau of Technical Supervision, and took effect on May 1, 1990. It is obsolete: it has been replaced by GB 11533-2011.
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Document preview — GB 11533-1989
National Standard of the People's Republic of China
Issued by: State Bureau of Technical Supervision
Contents
- Document data
1 Document data
Sector: National standard (Mandatory).
Issuing body: State Bureau of Technical Supervision.
Date of issue: 1989-03-27.
Date of implementation: 1990-05-01.
Status: obsolete, replaced by GB 11533-2011.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.
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GB 11533-1989
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