Electrical and scientific instruments and apparatus : november 20th, 1899 (1899)
Elmer G. Willyoung & Co · New York : E.G. Willyoung · leaf 151
he diameter of the driving pulley is marked on the dial. The motion may be in either direction, and the apparatus may beplaced in a vertical or horizontal position, or at any desired angle betweenthese positions. 146 Tachometers of this class, with dials: From about 30 to 300 revolutions per… … Fig. 112. W7004. 3 inch dial, 50 to 2000 revolutions per minute $55 00 W7005. 3 inch dial, 40 to 3000 revolutions per minute 60 00 The Portable Tachometers are similar in construction to the permanentattachment form. By applying them to the center of rotating shafts theywill instantly and correctly…
Electric apparatus and appliances · Equipment and supplies
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