Abbott's American Watchmaker and Jeweler

How to true a balance, repair a chipped dial, temper a spring or test a stone — the working bench-book of the American watch trade, arranged A to Z.

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Inches (French Lines French Lines)

French Lines. 1 0.0393708 0.44329 2 0.0787416 0.88659 3 0.1181124 1.32989 4 0.1574832 1.77318 5 0.1968539 2.21648 6 0.2362247 2.65978 7 0.2755955 3.10307 8 0.3149664 3.54637 9 0.3543371 3.98966 10 0.3937079 4.43296 French Lines expressed in Inches and Millimeters. French Lines. Equal to

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