16 points : mechanical checking procedure systematically planned to eliminate stoppage faulty workmanship and timekeeping troubles : for watch repairing classes : junior and advanced junior /

16 points : mechanical checking procedure systematically planned to eliminate stoppage faulty workmanship and timekeeping troubles : for watch repairing classes : junior and advanced junior / Sixteen points : mechanical checking procedure systematically planned to eliminate stoppage faulty workmanship and timekeeping troubles At head of title : WPHI Western Pennsylvania Horological Institute. - 12 unnumbered pages ; 15 cm


Clock and watch making--Study and teaching.
Clocks and watches--Repairing--Study and teaching.

Repair USA WPHI checklist trainees Western Pennsylvania Horological Institute, education textbook Watch (general)