Features: Crafted from stainless steel with adjustable sliding ruler, this combination square ensures accurate angles measurement for any project. Builtin bubble Levels, that makes readings more accurate, 12Inch rustproof stainless steel ruler with deeply marking that prevent the print from rubbing offs. The combination square is a good helper for woodworking and it can be used as a square, depth gauges, scribers, and a Levels. It's suitable for measuring lengths, widths, depths, height, 90 degrees angles, 45 degrees miters angles and scribing. Effortlessly find center knockouts for using the integrated conduits layout template. Easy to read Levels and a metal scribers on the side of the combination ruler increase product practicality. The rafter square can be used as a guide for crossing cutting lumber. They both work accurately at angles 90 degree or 45 degrees. Specifications: Material:Stainless Steel,Aluminium Size:Approx.310mm/12.2''x116mm/4.56'' Package Includes: 1Piece Combination Square note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.