Durable MaterialThe Square chevron is die-cast from a thick aluminum alloy, allowing it to last a long time while providing accurate measurement. The combination ruler itself is die cast in zinc alloy and carries a stainless steel steel ruler. with a matte finish. Clearly identifiable scaleThe square chevron finish features low glare and a protective powder coat finish. It has permanent deep markings and white graduations for maximum readability in any lighting. The stainless steel ruler of the combination square has a deep etching scale for superior readability and long lasting use Multiple GraduationThe 7 inch chevron square has many types of graduation that blend the features of the framing square, test square, miter square and protractor square. The combination square has a 12 inch stainless steel ruler which has 3 kinds of minimum scale value: 1/16, 1/32 and 1mm. User friendlyThe lip fence allows you to easily braces the rafter flush with the lumber, creating a straight or angled line proportional to the edge of the lumber. The combination square's spring-loaded screw makes it easier for you to detach the stainless steel ruler, and the smooth ruler is easier to slide in for your measurement. a metal tracer on the side of the combined ruler increases the practicality and versatility of the product. 90 degree or 45 degree angle. Specification: Material: stainless steel + zinc alloy Color: Silver and Black Size: Total 30 cm (12 inches), Double-sided scale Package Included: 1 x Combo Square Ruler Emergency Liner The scribe can mark the scale in case of emergency. Easily draw perfect 45 and 90 degree angle markings. Precision scale Adopt laser technology for high precision manufacturing, double-sided ruler in mm and cm gradations. Embossed graduation for easy reading and durability. Spirit level The combination carpenter's square set can be used as a square, depth gauge, plotter and level.