Kleinlein, Walter J. 1876-
Practical balance and hair-spring work,
by Walter J. Kleinlein.
- ix, 115 pages : illustrations, diagrams ; 18 cm
Reprint of original: [Boston] : The Author, ©1925.
Clocks and watches--Repairing.
Adjust USA hairspring Kleinlein, Walter J. Watch (general)