Kapro 309-12 Legend Try & Mitre Square with Stainless Steel Blade, 12-Inch High-impact polymer handle with unique support ledge Stainless steel blade is permanently etched with graduations of 16ths Blade indicates 22.5, 45, 67.5 & 90 degrees Certified 90 degrees Marking point for pencil Measurement Graduations: 1/16 inches