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Our Future Clocks and Watches

Nature volume 31, pages 201202 | Download Citation

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Abstract

IN connection with what we have said before on this subject we give a drawing of the new dial in use on some of the American railways where the new system is already at work, the clocks indicating a certain number of hours plus Greenwich, according to the longitude of the section.The intersection of the two circles of figures serves the purpose of giving day hours inside and night hours outside.

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https://doi.org/10.1038/031201b0

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