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GB/T 34839-2017 Active
GB/T 34839-2017 Timekeeping instruments—Designs and dimensions of crowns and sealed tubes
Abstract
This standard specifies the design and dimensions of the stem head and sealing tube, as well as their tolerances. This standard applies to stem heads and sealing tubes of mechanical, electromechanical, and electronic watches with waterproof design.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 34839-2017 |
| CCS | Clocks and watches |
| ICS | Comprehensive Horology |
| Implement Date | 2018-05-01 |
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$ 50
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$ 50