The Patented Metric Speed® Square 25cm Square is five tools in one! It's a Try Square, Mitre Square, Protractor, Line Scriber and a Saw Guide. This square has indications for the One-Number Method™ of rafter layout and includes an instruction book. It also features two metric and degree scales for common and hip-valley rafter layouts. Just like the Speed® Square, it's made of high-grade aluminum alloy.
