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DIN 8304:1989-02
Hairsprings for watches and clocks; code-numbers
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Summary
This standard refers to hairsprings which are used in mechanical watches and clocks.
Technical characteristics
| Publisher | Deutsche Institut für Normung e.V. (DIN) |
| Publication Date | 02/01/1989 |
| Page Count | 2 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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