Starrett 198 Standard Letter Size Drill Gage A-Z .234"-.413" Hardened Steel

The Starrett 198 Standard Letter Size Drill Gage provides quick, convenient checking of letter size drills in a compact, durable hardened steel plate. Designed for machinists, toolmakers, and shop professionals who need fast, accurate drill size verification, this gage is a long-trusted staple in precision measurement.

Key Features:

• 26 letter-size holes covering drill sizes A through Z with decimal equivalents from .234" to .413" diameter
• Approximately 5/64" thick × 2-5/16" wide × 6-1/4" long — compact enough to keep close at the bench or machine
• Constructed from hardened steel for long-lasting durability and resistance to wear
• Satin finish reduces glare and provides a professional appearance
• Thoroughly tested after hardening to ensure accurate hole sizes
• Equivalent fractional range: 15/64" – 13/32"

The Starrett 198 is an essential reference tool for any shop working with letter-size drill bits, enabling instant go/no-go size verification without the need for calipers or micrometers. Made by L.S. Starrett, a precision tool manufacturer with over 140 years of industry expertise.