Swanson 10 In. L X 1 In. H Aluminum Speed Square

METRIC SPEED® SQUARE 25 CM W/BLUE BOOK, EN/SP/FR PKG (10 IN. US) This is the 25 cm metric version of the Swanson® Speed® Square. The Swanson® Speed® Square was first developed by company founder Albert Swanson in 1925. This innovative tool combines 5 tools into 1: 1. Try Square, 2. Miter Square, 3. Saw Guide, 4. Line Scriber, & 5. Protractor. The Speed® Square is die-cast for durability and accuracy. Made of heavy-gauge aerospace aluminum alloy, it is built to last. The Speed® Square includes the Swanson® Metric Blue Book of Rafter Length and Roof Construction and also features markings for using the Swanson® One-Number® Method of rafter layout. The Swanson® Speed® Square is our most popular product and remains the most trusted square of its kind.  Look for the Diamond® cutout for genuine Swanson® products.This metric version of the Speed Square, made in the USA since 1925, is essential for every carpenter, construction professional, roofer, and DIYer.Multi-tool: Try square, miter square, saw guide, line scriber, and protractor. For what it does, the Speed Square belongs on every tradesman’s tool bench.Includes pocket-sized Swanson Blue Book comprehensive reference guide with our One-Number method to help workmen make correct angle cuts for any pitched roof.Features: 0.5 cm spaced scribing notches and the Diamond cutout for easy rafter seat cuts and scribing the most common and popular stud widthsGradations included for marking common, hip, valley, and jack rafters. Useful for determining and marking angles and making square cuts on boards.Heavy-gauge billet aluminum alloy construction is die-cast for increased accuracy over laser-etched and extruded stamped rafter squares.