WORKPRO Combination Square 300 mm, Try Universal Angle with Spirit Level and Scribe Needle, Adjustable Protractor Made of Stainless Steel 90/45 Degree Measuring Tool Zinc Alloy Handle

【Superior Material】WORKPRO multifunctional adjustable ruler is robust and durable. The ruler is made of high quality stainless steel and the angle bracket is made of zinc alloy, which ensures it will not rust, deform or break easy 【High Accuracy】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 that makes it easy to mark without a pen Adjustable design: the spring screw and the effective clamping system make it easy to remove and install the stainless steel ruler, and the smooth ruler also makes it easy to measure by sliding 【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 【Note】In order to achieve a more accurate right angle, the end of the steel ruler cannot be pressed against the rib (about 15mm) 【How to know if it is a right angle?】Step 1: Draw a vertical line on a white sheet of paper (for example the handle to the right). Step 2: Invert the square and draw another vertical line on the first vertical line (then the handle to the left). Step 3: If the two vertical lines coincide perfectly, i.e. the angle of the square is a right angle