[CUTTING GUIDE TOOL] - Allows you to read external and internal angles directly from a scale. Bisects the top angle without changing the setting. Ideal for measuring angles when miter cutting large boards, fillets and architraves. .[Angle Measuring Tool] - A Must-Have Tool in Your Toolbox, really helps when you need to cut tricky special angles, saves a lot of time and frustration to measure and cut corners quickly. No more excess material and waste, whether you are working with wood, porcelain tile or ceramic tile, or any time you need precise cutting .[Easily lock the angles with the metal knobs] - Easy to adjust and easy to read markers. The angle ruler can accurately measure any desired angle or shape by tightening or loosening the screw, perfectly locks into any desired angle while making a mark whenever you need it without having to mess around with paper templates and cutting them. .[High Application] - This Angle Gauge is useful for cutting tiles, bricks, stone, wood, laminate and any project you can think of. Perfect for any DIY enthusiast, carpenter .[High Accuracy] - Our angle ruler can measure angles from 10 degrees to 170 degrees, can measure both inclusive angle and half angle at the same time. Easy to get angles for supports accurately