Small Brass Wheel Cutting Engine, Switzerland, 19th century, for cutting crown wheels in verge escapement watches, with gear-driven index plate with nine divisions numbered 7, 9, 11, 13, 15, 17, and 19, shaped steel indexing arm, and long vice mount, overall ht. 8 1/2, overall lg. 7 3/4, indexing wheel dia. 3 1/2 in. Note: Crom #2 goes into detail about this engine specifically, on p. 351, figures 716-718.
Small Brass Wheel Cutting Engine, Switzerland, 19th century, for cutting crown wheels in verge escapement watches, with gear-driven index plate with nine divisions numbered 7, 9, 11, 13, 15, 17, and 19, shaped steel indexing arm, and long vice mount, overall ht. 8 1/2, overall lg. 7 3/4, indexing wheel dia. 3 1/2 in. Note: Crom #2 goes into detail about this engine specifically, on p. 351, figures 716-718.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
