🔍 Measure Up to Excellence! Easily adjust the square head for lockable stability, making it perfect for any project, big or small. The Center Head attachment simplifies locating the center of cylindrical or square work, enhancing your workflow. Experience unparalleled accuracy with a full 0 to 180° protractor head for effortless angle measurements. Proudly made in the USA, Starrett combines over 140 years of heritage with modern innovation for top-tier tools. Crafted from hardened steel, this set is built to withstand the toughest jobs, ensuring longevity and reliability. 4R Graduation Type 12" Blade Length Hardened Steel The Starrett Combination Set is a versatile and durable measuring tool featuring a 12" blade length, hardened steel construction, and a 4R graduation type. It includes a square head, center head, and protractor head, designed for precision and ease of use in various construction and DIY tasks. Proudly made in the USA, this set embodies over 140 years of quality craftsmanship.