American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 224
quite common among the trade insome parts of Europe, and I have also seen itin use in the United States. The diagram willsufficiently explain the points of difference be-tween it and the tool described in the Journal.It is in principle precisely the same as the gim-bals of a box chronometer, and… … are two screws or pivots placed in each ring atright angles from each other. When the toolis used it is held by the outside ring, and anyunsteadiness in the workmans hand is not com-municated to the facer, because the two rings,with pivots in each at right angles, permit ofan easy motion in every…
Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
