hich is a side view ofa device of this kind seen edgewisein elevation. In this B represents ^r_...- the bed plate, which supports three If— swing jaws, shown at C, Figs. 109 ^im * \\£ J^jTJand 110. The watch plate is indi- r Fig. 109 cated by the parallel dotted lines A, Fig. 109. The seat a of the… … Fig. 110 must be corrected for our purpose. We will take it for grantedthat all the seats a are of precisely the same height, measured fromB, and that a watch plate placed in the jaws C will be held exactlyparallel with the said bed B. We must next provide two pillars,shown at D E, Figs. 109 and…
Clocks and watches
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