Features Stainl Steel Construction - Crafted from high-quality stainl steel, this protractor ruler ensures long-lasting durability and resistance to wear and tear Convenient Locking Knob - Easily secure angles at any position with the built-in locking knob, providing stability and accuracy for measurements Versatile 2-In-1 Design - Combine the functionality of a ruler and protractor in one tool, simplifying your measuring tasks for enhanced efficiency Clear LCD Display - Quickly and effortlly read measurements with the bright LCD display that provides clear visibility even in low light conditions Rapid Digital Measurement System - Experience faster and more accurate angle and length calculations, making your projects easier and more Features: 1、The ruler is made of stainl steel material, practical and . 2、Designed with locking knob for locking angle at any convenient position. 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: The ruler is made of stainl steel material, practical and . Designed with locking knob for locking angle at any convenient position. 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°, 10-390mm Resolution: 0.05° Accuracy: ±0.3° IP Rating: IP54 Operating Temperature: 5℃~45℃ Operating Humidity: ≤85%RH Battery: 3V CR2032 Battery Weight: 228g / 8oz (approx.) Package list: 1 * Protractor Ruler Package List