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GB/T 34839-2017Timekeeping instruments -- Designs and dimensions of crowns and sealed tubes (English PDF)

计时仪器柄头和密封管的设计和尺寸

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

Level / Type

National · Recommended

Issue date

November 1, 2017

Implementation date

May 1, 2018

Scope

GB/T 34839-2017 is the English-translated version of 计时仪器柄头和密封管的设计和尺寸.

GB/T 34839-2017 — This standard specifies the design and size of crown and seal tube and its tolerances. This standard applies to a waterproof design of the mechanical, electrical machinery and electronic watches crown and sealed tube.

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Document preview — GB/T 34839-2017

National Standard of the People's Republic of China

ICS: 39.040.01
Classification: Y 11

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

Document data1

Document data

International classification (ICS): 39.040.01.

Chinese classification (CCS): Y11.

Estimated length of the Chinese original: 8,894 words.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 6 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 286 · ISO 6426 · ISO 22810

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