[NEW PREMIUM CORNER ANGLE FINDER] - 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 mitre cutting large boards, fillets and architraves [HIGH ACCURACY] - Our angle ruler can measure angles 10 degrees to170 degrees, can measure both included angle and half angle in same time. Easy to get the angles right for the supports [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 mark as you need without having to mess around with paper templates and cutting them out [ANGLE MEASURING TOOL] - 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 wasted materials, whether you're working with wood, porcelain tile, or ceramic tile or any time you need precise cutting [HIGH APPLICATION - This Protractor handy for tile, brick, stone, wood, laminate to cuts and any projects you can think of. perfectly for any DIY lover, woodworker Color:Silver Size:38cm in length Package include:1*Premium Corner Angle Finder