Premium Material - Adjustable multifunctional ruler is sturdy and durable. will not break easily High Precision - The measuring range is 0-300mm, double-sided ruler in metric and inch graduations for easy and accurate reading. At the same time, it combines a level bubble, accurately measure the balance to improve work efficiency Multifunctional Measurement - This ruler can measure a variety of data, such as right angle, 45 angle, length, depth and width. Come with a built-in scriber tt allows easy engraving without a pen Adjustable Design - The spring screw and effective clamping system reduce the removal and installation of the stainless steel ruler, and the smooth ruler also makes it easier to slide measurement Widely Used - This ruler is suitable for measuring, marking, etc., to help you measure accurately. It is widely used in home, engineering measurement, housing construction and other places