Home › T › Twist Drill and Steel Wire Gauge
Twist Drill and Steel Wire Gauge
This gauge, which is shown in Fig. 149 will be found very useful in determining the diameter of twist drills and steel wire, and is very accurately and nicely made.
How to true a balance, repair a chipped dial, temper a spring or test a stone — the working bench-book of the American watch trade, arranged A to Z.
Home › T › Twist Drill and Steel Wire Gauge
This gauge, which is shown in Fig. 149 will be found very useful in determining the diameter of twist drills and steel wire, and is very accurately and nicely made.