Starrett 186 - Drill and Steel Wire Gage
The Starrett 186 Drill and Steel Wire Gage is widely used by mechanics for twist drills and steel drill rods. This product is like the Starrett 185 Time Saver Tap and Drill Gage but without the tap. Approximately 5/64" thick, 1-1/2" wide and 5-1/2" long. Contains 60 holes from 1 to 60.