400-Day Clock Repair Guide, 9th Edition

Updated and enlarged edition with new material and many illustrations on the various types and shapes of pendulums, the many sizes of ratchet wheels and the variety of suspension bracket and saddle units. There are over ninety illustrations of World War I models of 400-Day Clocks and a section of illustrations from patents. An appendix contains well over one-hundred historical facts, drawings, detailed descriptions, illustrations of movement parts including wheel trains and other repair helps that relate to the many clocks whose movement back plates are illustrated.