Features Stainl Steel Construction - Built to last, this protractor ruler resists wear and tear, ensuring reliable performance for all your measuring needs Convenient Locking Knob - Secure any angle with ease using the locking knob, allowing for measurements at any desired position 2-in-1 Design for Versatility - Enjoy the combined functionality of a ruler and protractor, simplifying your measuring tasks and saving time Clear LCD Display for Easy Reading - Quickly and effortlly read measurements with the bright LCD screen, enhancing accuracy in your work Fast and Accurate Measurements - The advanced digital calculation system provides quick and angle and length measurements, improving your efficiency Features: 1、Stainl steel material, practical and 2、With locking knob, at any convenient position locking angle 3、Ruler and protractor 2 in 1 combination for easy measuring 4、Quick and easy to read the measurement with LCD clearly display 5、Digital calculation system makes angles and length measurements more quickly and accurately Specification: Features: Stainl steel material, practical and . With locking knob, at any convenient position locking angle. Ruler and protractor 2 in 1 combination for easy measuring. Quick and easy to read the measurement with LCD clearly display. Digital calculation system makes angles and length measurements more quickly and accurately. Specification: Material: Stainl steel Measurement range: 0-360°, 0-300mm Accuracy: ±0.3° Resolution: 0.05° Operating temperature: 5℃-45℃ Battery: 1 x 3V CR2032 Battery Total length: 380mm / 14.96inch Weight: Approx. 280g Package Included: 1 x Protractor Ruler Package List