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File:Standard Electric Time Co. Electromechanical Master Clock 01.jpg

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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
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I, the copyright holder of this work, hereby publish it under the following license:
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Flash fired, strobe return light detected, compulsory flash firing
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Standard Electric Time Co. Electromechanical Master Clock 01.jpg
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File:Standard Electric Time Co. Electromechanical Master Clock 01.jpg
246 × 600 pixels
98 × 240 pixels
197 × 480 pixels
315 × 768 pixels
420 × 1,024 pixels
1,615 × 3,939 pixels
Original file
Wikimedia Commons
description page there
You can help
Elecclock
Creative Commons
Attribution-Share Alike 3.0 Unported
same or compatible license
depicts
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URL
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