Seiko 6139- repairing the damage hairspring.
14:04
Curso práctico de iniciación a la relojería mecánica - Volante Y Espiral [El Relojero Aficionado]
22:56
Hairspring straightening 101
16:47
Hair Spring Straightening (1974)
17:26
Omega 30T2 Repair - Custom made Hairspring and Fourth wheel
1:03:29
Hairspring Havoc: A 1973 Seiko Balance Repair & Service Journey
24:45
How to Disassemble (and Reassemble) a Watch Movement Using Simple Tools
14:51
RELOJ DESPIVOTADO REPARACIÓN PASO A PASO
16:46