1、UNIVERSAL COMBINATION ANGLE: Accurate redefined, elevate your measuring and drawing game with this multi angle measuring ruler and excellent professional measuring tool. Compared to other rulers, this hole ruler has added a latent prevent drop device, so you don't have to worry about rulers falling off when working 2、MULTI ANGLE MEASURING RULER: 90 degree and 45 degree stops for versatile angles, more angles available, help you to measure things accurately. Upgrade your tools for accuracy 3、STRONG AND STURDY: Angle measurement tool is made of aluminum alloy and high carbon steel material, which is long lasting and not easy to bend, and can be applied for a long time. Lightweight, compact straight ruler is portable and easy to carry 4、PROFESSIONAL DESIGN: Scale on both sides is carved on the ruler, which make it clear for you to read. 1 stainless steel drawing needle act as another pen for you. Great value with really useful additional features such as a scriber and ejection stop 5、WIDELY USES: Accurate universal combination angle with ruler stop for accurate marking, measuring, scribing, and drawing. A practical tool for schools, offices, home, woodworking and engineers, making it possible to measure data anytime and anywhere