High PrecisionMeasuring 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 MeasurementThis ruler can measure a variety of data, such as right angle , angle of 45, length, depth and width. Come with a built-in scriber that allows easy marking without a pen High qualityThis multifunctional adjustable ruler is sturdy and durable. The ruler is made of high quality stainless steel and the corner bracket is made of zinc alloy, which ensures its quality. 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 AdjustableSpring-loaded screw and efficient tightening system make removal and installation easier of the stainless steel ruler, and the smooth ruler also makes it easier to measure by sliding