Electrical Clocks and Watches

Wise (S.J.): Electric Clocks
O/P. 144 pages, 6 pages of adverts, 137 figures, 1st edition, 1948. This book covers 3 types of electric clocks: those in which a pendulum or balance is moved directly by the electrical impulse, those where the driving force is electrically rewound and those with a/c synchronous motors. The sub-title says it all: Principles, Construction, Operation, Installation and Repair of Mains and Battery-operated Clocks for Domestic and Industrial Purposes. A good copy, cloth on front board wrinkled, poor dust jacket. (Ref: K668 - D2)  in stock.