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DIN 8257-1:1987-11
Jewels for fine mechanics; watch jewels, flat
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Summary
This standard refers to flat jewels for use in movements for watches.
Technical characteristics
| Publisher | Deutsche Institut für Normung e.V. (DIN) |
| Publication Date | 11/01/1987 |
| Page Count | 4 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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