Features: Enables external and internal angles to be read direct from a scale. Divides top angle in two without changing the setting. Ideal for measuring angles when mitres cutting large boards, fillets and architraves. A Must-Have Tool In Your Toolbox its really helpful when you have to cut tricky custom-angles, will save a lot of time and frustration for measuring corners and cutting quickly. No more do over and waste materials, whether you are working with wood, porcelain tile, or ceramic tile or any time you need precise cutting Can easily lock in angles with metal knobs: Easy to adjust and the markers are easy to read. The angle ruler can measure any desired angle or shape accurately by tightening or loosening the screw, locks into any desired angle perfectly while making a marks as you need without having to mess around with paper templates and cutting them out High application:This Protractor handy for tile, brick, stone, wood, laminate to cut and any projects you can think of. perfectly for any DIY lover, woodworker Made of Aluminium construction, lightweight and easy to carry Our angle ruler can measure angles 10 degrees to 170 degrees, can measure both included angle and half angle in same time. Easy to get the angles right for the supports Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Material: ABS Specifications: 380mm; 450mm Weight: 63g; 70g Package List: 1x Corner Angle Measuring Finder Tool