Fritts, Charles Edgar. [from old catalog] · Philadelphia, The Keystone · leaf 116
^ at each corner for standing on the bench withthe clamp screws, c?, free. Fig. 12 is a plan view, showing thebase cut out at the center, z, with slots 2^ 2, 2, for the three postsor clamps, C, to slide to or from the center, for holding themovement in any desired position, like the clamps on the…
Clocks and watches
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