Features: 1. Hardened and tempered blades. 2. With a level on the square and protractor head. 3. 180 angle measuring device and center head. 4. The head of the reversible protractor has a scale. 5. The brass screw and scribe have a built-in level. 6. Stainless steel rulers can be measured in metric and imperial systems. Used as an external test square, depth gauge, scribe, precise 90 degree and 45 degree angle. Internal trial side and miter side Stainless steel finished ruler, clear and accurate calibration Centimeter and millimeter mark Fully adjustable horizontal square head Specification: Material: stainless steel Size: approx. 33.5x14x1.8cm/13.18x5.51x0.7in Weight: about 362g Material: aluminum alloy Body material: stainless steel Protractor handle material: plastic Total length: 305mm/12.01in Width: 105 mm/4.13 inches Thickness: 2mm/0.08in Weight: 70g/140g Package Included: 1*Combined angle ruler