3-in-1 Piano Regulating Gauge
Plastic gauge for quickly measuring:
1. Let-off 1/8”
2. Hammer Blow Distance 1-7⁄8”
3. Backcheck Distance 5/8”
1. Let-off 1/8”
2. Hammer Blow Distance 1-7⁄8”
3. Backcheck Distance 5/8”