![Master Watchmaking Lesson 5](/media/uploads/2019/2/17/master-watchmaking-lesson-5.jpg)
Master Watchmaking Lesson 5
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Thomas Sweazey
A home study booklet on watch repair. Lesson 5: Mainsprings in Watches. Sectons 125-162.
A home study booklet on watch repair. Lesson 5: Mainsprings in Watches. Sectons 125-162.