Colour:As Shown Material:plastic+metal type:B: ABS 300mm Package Contents: 1 x digital display angle ruler Only the above package content, other products are not included. Note: Light reflection 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. [Hold data & Invert Reading]You can save data during the measurement by pressing HOLD / . The display can be inverted reading by long pressing HOLD / . Measure length and angle more accurately and conveniently. Save time and hassle! [2 in-1 Angle Finder Ruler] New upgrade 2-in-1 precision ruler & digital angle finder with a moving blade can calculate internal and external angles and measure length quickly and accurately (metric and imperial scale). These are great for a who needs to measure the inside and outside corners of their home. It is the toolbox must-have tool! [Premium Digital Protractor] digital display angle ruler: material multi-angle measuring ruler that is , hard, and . The digital LCD is easy to read and you don't need to look and at the angle and length anymore. Plus it has a stable locking function that locks measurements at any angle. [High Accuracy Measurement]The accuracy of this angle finder is ± 0.3 degrees. Resolution 0.1°, measuring range: 0-999.9°, folded length: 8 inch / 200mm, total length: 15 inch / 400mm. [Professional Measuring Tool]The angle finder protractor is well used in angle ruler, straight ruler, and square ruler. It can be used for construction, drafting, woodworking, masonry, machinery, decoration, , and related work for measuring and marking. This is a great gift for an architect, , woodworker, and carpenter.