Hairspring straightening 101
29:06
Comment entretenir un ressort de montre à la main
16:47
Hair Spring Straightening (1974)
23:18
Hand Making a Verge Watch Hairspring. Pt.3
14:04
Cours pratique d'horlogerie mécanique - balancier et spirale [l'horloger amateur]
12:04
Straightening a hairspring for a ladies watch
18:34
Fitting a new balance staff to a vintage 1940s cyma www military watch. Repair series
14:51
RELOJ DESPIVOTADO REPARACIÓN PASO A PASO
18:56