🔧 Measure Up to Perfection! Engineered indexing for spot-on accuracy, every time. More than a ruler—your go-to tool for all projects. Experience laser-etched clarity for flawless measurements. Adjust angles with ease and confidence, every 5°. Satin-finish stainless steel for longevity and minimal parallax. 15-inch precision ±.004" accuracy Adjustable 0-70° The Supernic Woodworkers Edge Rule is a 15-inch adjustable protractor and T-square crafted from durable stainless steel. It features precision laser etching for clear readings, an adjustable head for versatile angles, and a unique indexing system for accurate measurements, making it an essential tool for carpentry and DIY projects.