Product description Highlights: .05 centimeter spaced notches to facilitatescribing lines Packaged with the Swanson green book of instructions for metricmeasurements in English and Spanish 5 tools in 1: try square,line scriber,miter square,saw guide and protractor Made of high grade aluminum alloy Mattefinish to prevent glare The Swanson Meteric Speed Square is madefrom high-grade aluminum alloy and comes with two metric and degree scales forcommon and hip-valley rafters. This 25-centimeter metric speed square is 5tools in 1: a try square, miter square, protractor, line scriber, and sawguide. It is packaged with an English/Spanish instruction book and is backedby a 1-year limited manufacturer’s warranty. See all Product description