High Durability: Made of high quality stainless steel, rust and corrosion resistant and can withstand high pressure for long term use. Multi-angle and dual scale measurement: The folding ruler can be moved at multiple angles to allow measurements on objects of multiple shapes. And it has a dual scale which is metric and inch to get a dual measurement scale. Easy to Use: Put the ruler in the work area, adjust the angle, tighten the knob, you can start measuring, drawing and other work, easy to use and carry. When you tighten the knob, the ruler will stabilize in the line and will not move. It is safe and durable. Wide Application: Can be used to make templates for tiles, wood, glass, etc., and can also be used for drawing and measuring by engineers, with a wide range of applications.