Durable Protractor: Stainless steel digital angle finder with laser-etched measurements for clear readings. Digital LCD display provides easy viewing and accurate results. High Accuracy: Measures with 0.3 accuracy. Measuring range: 0360. Folded length: 8" / 200mm. Total length: 15" / 400mm. Save Data and Reverse Display: Press "HOLD/Rev" to save measurements. Long press to reverse the display for convenient reading. Two-in-One Design: Combines a ruler and protractor for measuring both length and angle, enhancing measurement efficiency. Note: Stainless steel construction has sharp edges. Handle with care and keep away from children. Material: Stainless steel. Total length: 400mm. Measuring range: 0360. Resolution: 0.05. Accuracy: 0.3. Requires 1 x CR2032 3V lithium battery (not included). Package includes: 1 x digital angle finder, 1 x user manual. Excellent Locking Function: Adjustable tight/loose button allows customized tension control. Zero Button: Allows quick zeroing for simplified angle measurement with positive or negative readings. Etched Gauges: Permanently marked scales ensure long-lasting clarity.