American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 169
hichcauses endless trouble in computing and ap-plying correctional quantities before the realre«ults can be tabulated as duly authenticated. New Caliper. This tool consists of a round tube O, ter-minating in a much diminished hollow point,upon the extreme end of which b, is a thindisk ; around the… … tudinal slot in the outer tube, which innerslide is tapped to receive and be actuated bythe screw with a convenient milled head.To the lower end of the inner slide is fixed athin needle-shaiped follower c, passing downthrough the diminished end of the tool, andterminating in a fine pivot. It will…
Clocks and watches
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