Thomas Sweazey, Byron Sweazy - Master Watchmaking Lesson 18
Chicago School of Watchmaking | 1962 | ISBN: N/A | English | 17 pages | PDF | 5.71 MB
Chicago School of Watchmaking | 1962 | ISBN: N/A | English | 17 pages | PDF | 5.71 MB
A home study booklet on watch repair. Lesson 18: Truing Hairsprings. Sectons 376-381.