Swanson Carpenters Speed Square Metric

The Swanson speed square is a patented metric measuring tool with a 250 mm length and aluminium alloy construction. It combines a try square, mitre square, protractor, line scriber and saw guide.

Two separate scales allow work in metric or degrees. Graduations mark common, hip, valley and jack rafters, with indications for the One-Number Method of rafter layout. Scribing notches are spaced at 0.5 cm. Its heavy-gauge billet aluminium alloy construction is die-cast, and it has high-visibility black graduations with a non-glare matte finish.