Starrett CB4-4R Satin Chrome Combination Square Replacement Blade Graduation - 4 4R

The Starrett CB4-4R is a precision replacement blade designed for use with Starrett junior combination squares, combination sets, and bevel protractors. Measuring 4 inches in length with a satin chrome finish, this blade is an ideal spare or upgrade for professionals and hobbyists working in woodworking, metalworking, and general layout applications.

Featuring 4R graduation, the blade is engraved with four measurement scales for versatile, high-accuracy readings. The durable steel construction and corrosion-resistant satin chrome finish ensure long-lasting performance in demanding shop environments.

Key Features:

• Blade Length: 4 inches
• Graduation Type: 4R — 8ths, 16ths, Quick-Reading 32nds, and 64ths of an inch
• Blade Width: 5/8 inch
• Blade Thickness: 1/16 inch
• Finish: Satin Chrome for glare reduction and corrosion resistance
• Compatible with any 4-inch head combination square, combination set, and bevel protractor
• Made in America

The Starrett CB4-4R replacement blade integrates seamlessly with Starrett combination square heads and is the direct successor to the legacy B4-4R model. It is not compatible with the Starrett 33J or No. 8 combination squares. Starrett precision measuring tools are trusted by machinists, engineers, and tradespeople worldwide and are manufactured to exceed national and international accuracy standards.