Starrett Standard Letter Size Drill Gage, A-Z range
Starrett catalog number 198
Letter size drills can be quickly and conveniently checked with this gage. Twenty-six holes are provided, giving corresponding drill sizes from "A" through "Z" with decimal equivalents from .234" diameter through .413" diameter.
The gage is approximately 5/64" thick by 2 5/16" wide and 6 1/4" long, is hardened and has a satin finish. Thoroughly tested after hardening.