[PERFECT COPY] - Our angle finder is specially designed for re-engraving angles. You only need to align the angler with the angle to be measured, and t locks the angle and splits it in half, the angle can be quickly and accurately transmitted to your Miter saw so that you can make precise cuts. The precise angle can be perfectly copied without reading scale, which can save a lot of time [EASY MEASUREMENT] - Suitable for measuring any angle, it's a good angle finder for cutting corner and crown molding, staircase, wood casing, laminate flooring, decking, baseboard, corner wall or decoration. Easy to measure internal or external angles from 0-180 degrees (miter angle from 0-90 degrees).[LIGHTWEIGHT AND PORTABLE] - This protractor guide measures is detachable and foldable. This angle measuring can be placed on your toolbox or other workbench at will. Which is very light and you can even take it with you effortlessly. It is a valuable for DIY home renovation and carpentry projects.[LOCK FUNCTION] - In order to facilitate the direct copy of the angle, our goniometer can be locked at any angle, and the precise angle can be obtained without reading the scale. While saving time, this angle duplicator can also avoid the waste of materials caused by the wrong angle. Compatible with all miter saws.[SPECIAL ECCENTRIC LEVER DESIGN] - The eccentric special lever design makes it easy to operate, even in a narrow working area, and the data can be measured and completely transmitted to the miter saw.colour: as shownMaterial: Metal+PlasticPackage Contents:1 x construction protractorsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.