Old clocks and watches & their makers, being an historical and descriptive account of the different styles of clocks and watches of the past, in England and abroad, to which is added a list of ten thousand makers (1904)
Britten, F. J. (Frederick James), 1843-1913 · London, B. T. Batsford · leaf 241
in the habit of tryingpulses. The pulse watch which he caused to be made ran, he said,for sixty seconds. Harrisons timekeeper with a centre seconds handwas tested in 1760, and seconds hands were not usually applied towatches till after that date. Sun and Moon Hour Indicators.—Two examples of a… … Fig. 348. Fig. 349. through it is seen one half of a disc which rotates underneath once intwenty-four hours. On one half of the disc is engraved the sun,which points to the hour from 6 a.m. to 6 p.m., and on the other themoon, which performs the same office from 6 p.m. to 6 a.m. Theminutes are…
Clocks and watches · Clock and watch makers
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