Overall: 9 1/4 x 14 3/4 x 6 3/4 in. (23.5 x 37.5 x 17.1 cm)
Geometrical lathe, a mechanical device used to engrave metal plates for printing the borders and backgrounds of bank notes with complex ornamental patterns; device consists of a series of brass rings of diminishing size joined by bolts and screws; with one ivory knob, a lever with ivory ring handle, and an ivory ring with minute calibrations near top. The chuck is the main part of the geometrical lathe, which was driven by belts powered by a foot treadle.
Due to ongoing research, information about this object is subject to change.