File:Standard Electric Time Co. Electromechanical Master Clock 01.jpg
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Summary
| Description |
English: Master clock from synchronized school clock system. c. 1928 Electromechanical movement winds each minute and impulses slave clocks each minute. Operates on 24 Volts DC |
| Date | |
| Source | Own work |
| Author | Elecclock |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:07, 8 July 2013 | | 1,615 × 3,939 (1.13 MB) | Elecclock | User created page with UploadWizard |
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