The outlines of physics: an elementary text-book (1897)
Nichols, E. L. (Edward Leamington), 1854-1937 · New York, The Macmillan Company; London, Macmillan & Co., Ltd. · leaf 447
Fig. 397. Fig. 398. terms of the scale divisions. For eyepieces of ordinary power, thelines of the glass scale should be one one-hundredth of a centimeterapart. It is customary to rule fifty such lines upon the eyepiece scale.In order to reduce the reading obtained by means of this device to…
Physics
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