The Keyless Mechanism
A Practical Treatise on its Design and Repair

by
B. Hillmann

Translated by
Richard Watkins

This book (26 pages with 30 figures), first published in 1910, gives an excellent description of pendant winding and hand setting mechanisms, and describes their repair in detail. The translation is of the 3rd French edition.

It is provided as an Adobe Acrobat PDF file.
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