• IDENTIFIES DRILL BITS SIZES- Helpful when working with older, unmarked drill bits and bits too small to fit diameter markings
• 29 MEASURING HOLES- Identified drill bits from 1/16 Inch to 1/2 Inch in 1/64th increments
• ETCHED MARKINGS- Black graduations to give high contrast and will not wear off
• NO MATH- Shows drill sizes in both inches and decimal equivalents
• DURABLE- Made from heavy duty, rustproof steel