2 in 1 Digital Protractor - Measure not only length, but also 360 angle (interior angle, exterior angle). Locking Function Use locking screws to lock both legs in the desired position or angle. Large 1" LCD Display - LCD with electronic digital display, you can switch between degrees and minutes with the "/" button. The "HOLD" button stores data during measurement, the "ON/OFF/Zero" button resets the data to zero by short pressing at any angle; angle lock button for each angle. Measuring Angle: 000.0~999.9; Accuracy: 0.3; Resolution: 0.1; Measuring Range: 0-360. The ruler body is forged from high-quality stainless steel, which ensures quality, corrosion resistance and durability. Excellent Quality - The premium stainless steel forged scale is laser engraved (mm and inch scale), abrasion-resistant and corrosion-resistant. corrosion. Multifunctional This angle finder ruler can measure both angle and length, in both metric and imperial scales. Woodworking: setting angles for table saw, miter saw, band saw, etc. Construction Sketching, drawing Convenience Quickly measure angles with an accuracy of 0.3 degrees. (0.3 degrees means the measurement result can be up to 0.3 degrees higher or lower than the actual angle. The total difference between two measurements can be up to 0.6 degrees). Easy to use with only two buttons. A good locking function can lock the measurement at any angle. Compact structure for convenient carrying and use. Accessibility The rulers of this digital angle finder are made of durable brushed stainless steel. The angle finder can be used in various fields instead of an angle ruler, straight ruler, or square ruler, etc. Easily draw lines with the stainless steel rulers. Technical Description and Operation Measuring Range: 0~999.9 (must be calibrated before each use) Resolution: 0.1 Accuracy: 0.3 (0.3 degrees means the measurement result can be up to 0.3 degrees higher or lower than the actual angle. The total difference between two measurements can be up to 0.6 degrees). Ruler Measuring Range: 0~500mm; 0~ 7 inches Measurement: Laser Engraving Working Temperature: 0~50C. Thanks to the screw, the rulers could be held at any angle. Please hold the ruler when turning the screw. Turn clockwise to tighten; turn counterclockwise to loosen. The stainless steel edge is sharp for cutting papers and engraving marks on wood. It is dangerous for children. Please keep it out of reach of children. Just take out the battery. The button battery powers the product. It is easy to find in your local store or online. The battery is very small. Please avoid taking it out of the package.Good Quality Product