High-quality materials: The combination square is made of high-quality stainless steel, which will never rust or corrode, not easy to break. Durable and reliable to use for long time use. Multi-dimensional measurement: Can achieve level measurement, 90 angle measurement, 45 degree angle measurement. Compared with traditional rulers only for measuring, this multi-functional ruler meets your different needs. Unique Bubble Level Design: This movable combination angle ruler has the design of bubble level. traditional rulers, save a lot of tools to measure, make your workbench clean and tidy, very convenient to use. Easy to use and carry: Embossed double-sided scales with millimeter and centimeter scales are easy to read. Small tools are easy to carry and suitable for work. Wide range of use: Suitable for multi-dimensional measurement, markup, layout, etc. For example, construction workers, carpenters, planners, etc. DIY enthusiasts.