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Master Watchmaking Lesson 20

Posted By: Oleksandr74
Master Watchmaking Lesson 20

Thomas Sweazey, Byron Sweazy - Master Watchmaking Lesson 20
Chicago School of Watchmaking | 1962 | ISBN: N/A | English | 14 pages | PDF | 3.6 MB

A home study booklet on watch repair. Lesson 20: The Overcoil Hairspring. Sections 390-393.