1Accurate Measurement: This woodworking squares is laser scaled, clearly marked, accurate in measurement and easy to read 2Aluminum Alloy Material: Woodworking squares is made of aluminum alloy material, professionally milled, wear resistant 3Not Easy to Deform: This is strong L shaped measuring scribe ruler, which is deform prevention, with the maximum durability 4Wide Application: L shaped measuring scribing ruler adopts 90 degree angle, suitable for line drawing measurement such as woodworking 5Precise Scribing: This is woodworking squares, which is used for precise scribing, with rust resistance body and lightweight Item Type: AluminumFramingWoodworkingSquares Material: Aluminum Alloy Model Base Length(Approx.) Ruler Body Thickness(Approx.) Base Thickness(Approx.) 150mm 101mm / 4.00in 6mm / 0.24in 18mm / 0.71in 200mm 126mm / 5.00in 6mm / 0.24in 18mm / 0.71in 300mm 159mm / 6.26in 6mm / 0.24in 18mm / 0.71in1 x Aluminum Framing Woodworking Squares 1 x Wrench Match to the right size before use