Fritts, Charles Edgar. [from old catalog] · Philadelphia, The Keystone · leaf 118
. 15 is a rigid brass clamp, A^ to be fastened di-rectly to the watch plate orbridge, by thumb nut ^, havinga loose washer on its point toavoid marring the plate by thescrew. The rod b is rigidlysecured to the clamp, verticalto the inner side of the clamp,and the head c is also fast onthe rod, and… … J^
Clocks and watches
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