American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 251
A glass door in this box is useless,for the condensation of moisture from the exter-nal air upon the glass, kept cold by the interiorair, prevents observation through it. Suppose now that the watch has been foundto be gaining at the rate of ten seconds per hour,and it is subject to a temperature of… … ance does not sufficiently compensate for thedecreased temperature, and one of the screwson each side must be moved forward, and anothertrial made; if on another trial the rate provesto be a gain often seconds per hour, it may benext subjected to a temperature of say 90°.Under this trial, if its…
Clocks and watches
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