Powerful Function - The multi-angle measuring ruler can be deformed freely and used in various ways. It has a 12-sided ruler and 12 freely bendable metal buttons. Just adjust the metal knob to get the shape you want. Measuring objects of various shapes is quick and easy. Easy to read and use - Our multi-angle jig tool features laser etched markings and laser etched centimeter and inch lines as well. Even if you use the sliding ruler for a long time, you can keep it clear and easy to read. In addition, the screws provided are large and can be replaced with one hand, they are very easy to use. Easy to carry - This multi-angle measuring ruler has 12 sides, a foldable universal aperture locator , is easy to carry, not easy to lose. The Universal Opening Detector has three opening sizes of 45mm, 25mm and 40mm diameter linked together to avoid losing one on the job. Good material and easy to carry - The indicator of Premium ABS plastic surround, strong and durable, will not rust and has a long service life. The opening detector is made of an aluminum alloy. It is very resistant, stainless and durable. The original surface will not be scratched during use. Wide Application - The 12-sided multi-angle ruler is a universal tool for measuring angles, bricks, wood, tiles, floor, tile, roof and metal objects. You can choose a metal square as a gift for builders, tilers, carpenters, handymen, roofers, carpenters, architects, etc.