Set of 4 inch and 6 inch squares. Rulers slide in lockable groove; marked with easy-to-read 8th, 16th, 32nd, and 64th inch graduations.

Precision ground beams measure:
For 4 inch square: 1-7/16 inches long x 1-1/16 inches high x 9/16 inches thick
For 6 inch square: 3-3/4 inches long x 1-1/4 inches high x 5/8 inches thick

Features:

• Chrome plate rule blade for best protection from scratching

• Rust proof, stain-chrome finish to reduce glare

• Machined cast iron base

• Precision lapping on all measuring surfaces

• Protective case