ELECTRICAL HOROLOGY: A Practical Manual on the Application of the Principles and Practice of Electricity to Horological Instruments and Machines for the Measurement and Transmission of Time.

Third Edition, Revised and Enlarged by H.R. Langman. 12mo. red cloth hardback. No dust jacket. 200pp. plus 3pp. Publisher's List at end. Profusely illustrated with 93 b/w plates and diagrams. A clean copy with no previous owner's markings or inscriptions. Slight fading and soiling to spine with rubbing and light wear to edges. Overall a Good+ Copy.