First published in 1953 this authoritative work which was based on a lifetimes practical experience has been in continuous demand & is recognized as a classic work on the subject. Its great strength lies in the descriptions & principles of watch & clock construction in an easy-to-follow manner. The book opens with a description of the various tools & materials essential for good work; details are then given concerning the construction & repair of the various types of movement trains motion work & gearing the various forms of escapement keyless mechanisms balances & balance springs pendulums striking & repeating mechanisms calendars chronograph work & chronometers. The subject of cleaning is given careful consideration while filing & turning the two most important operations in watch & clock making are given special attention. The construction of specialist tools for repair work many of which were designed by the author is explained in some detail & illustrated by working drawings. In addition an appendix lists the various causes of failure & bad time-keeping.