Lessons in Horology by Jules & Hermann Grossmann 1905

Old hard cover book from 1905. All pages are intact, none are loose. Not perfect, but still a good readable, useable and collectible copy of a seldom seen or offered title. Lessons in Horology Volume 1 by Jules and Hermann Grossmann. Jules of Locle and Hermann of Neuchatel, Switzerland. 263 pages followed by several more pages of ads for other books. Published 1905 by The Keystone the organ of the jewelry and optical trades, Philadelphia. Volume 1: the principles of Cosmography and Mechanics Relating to the Measurement of Time--Motive Force, Mainsprings, Trains, Gearings, etc. Authorized translation by James Allan, Jr., of Charleston, SC. Chapters are General principles of cosmography relating to horology, general principles of mechanics, general functions of clocks and watches, maintaining motive forces, wheel-work, gearings. Over 100 illustrations. An important work on horology, clocks and watches. Original copy, not a reprint.

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