Material: carpenter's square is made of premium aluminum alloy, high hardness, high toughness, wear-resistant, anti-oxidation and durable. About more than 10 multi-functions: the drilling jig is square, protractor, dovetail jig, circular hole, parallel line, vertical line, drilling positioning, T-shaped tip, 45 angle ruler / 90. For example. custom colors for labels. Measurement and transfer of angular dimensions. 45 degree and 90 degree angle stop/marking gauge for parallel lines. Drill sizes with the drill guide. Wide range of applications: The false square joinery is suitable for processing three-dimensional workpieces, e.g. beams, squared timber, square and tubular pipes, hollow and solid, aluminum alloy, wood, stainless steel, marble, etc., etc. This is a great gift for a carpenter or plumber. Measurement accuracy: the woodworking measuring ruler itself Clear reading, easy to read and elegant in appearance. You don't have to turn around when measuring. Simply drag to mark the left and right 45 degree or 90 degree angles. Functions: for three-dimensional marking - measurement and transfer of angular dimensions - stop at 45 and 90 - marking dimension for parallel lines - determination of the drill size with the drilling template. He is more precise than other leaders.