This is the 25 cm metric version of the Swanson speed square. The Swanson speedsquare 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 speedsquare is die-cast for durability and accuracy. Made of heavy-gauge aerospace aluminum alloy, it is built to last. The speed square includes the Swansonmetric 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.
Swanson Speed Square Aluminum, Green
detailedDescription":"This metric version of the Speed® Square is essential for every carpenter, construction professional, roofer, and DIYer.
Manufacturer Part Number：NA202Model：NA202Assembled Product Weight：1.00 lbAssembled Product Dimensions (L x W x H)：10.00 x 9.88 x 1.00 Inches
Metric Speed® Square 25 Cm W/Blue Book, En/Sp/Fr Pkg (10 In. Us) 565282744