[Heavy Duty Stainless Steel Multi-Purpose Centering Tool] - A sturdy and durable, sturdy and durable stainless steel combination ruler, you can feel the scale engraved on the metal, which is clear and easy to read . [Multifunctional Combination Square Ruler for Woodworking] - There are 4 measurement methods: square ruler, protractor, millimeter and inch ruler and centering ruler. A set of precise measuring tools provides you with measuring angles and reliable cut marks. [Bubble Level & Brass Knurled Screw Adjustment] - A small bubble level built into the protractor and square tool to improve accuracy. The brass screw nut is for tightening or loosening the blade, there is a small spring in the screw, so attention (the spring is visible incomplete). [Easy to insert and use carpentry cubes] - A useful addition to your toolbox. At all times, there is a metric or imperial system in the one-sided ruler for reference squares, as well as outside of the reference rulers. pieces. Easy to store in the toolbox. [A wonderful addition to home measuring tools] - A great gift for engineering, woodworking, DIY, drawing design, carpenters and professionals.