J.A. Pickles Geometric Chuck

Description:

J.A. Pickles Geometric Chuck, 1966, brass and steel body marked J.A. Pickles Fecit 1966, sliding dovetailed platform with notched indexing gear calibrated 0-96, in a hinged mahogany box, dia. 7 in.

Note: This geometric chuck is shown in Theodore R. Crom, Horological and Other Shop Tools, 1700-1900, p. 285 in use on Holtzapffel lathe No. 2328.
Estimate $500-800

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