Mini Digital Protractor - Quickly turn on the protractor with a long press of the "ON/OFF" button for 3 seconds. - Easily switch between degrees and percentages using the "UNIT" key. - Toggle between absolute and relative mode with the "CAL" button; hold "CAL" for 4 seconds to return to absolute mode. - The "HOLD" function saves important readings, ensuring you never miss crucial measurements. Strong Magnetic Base & LCD Display - Features three powerful magnets for secure attachment to any steel surface. - Large LCD display provides quick and easy reading of level angles. - Automatic number reversal when the product is flipped, ensuring optimal visibility in any orientation. Zinc Alloy Case - Constructed with a zinc alloy case for superior durability compared to typical plastic designs. - Offers excellent heat dissipation, as well as waterproof and moisture-proof qualities. - Elegant appearance that enhances professional toolkits. Easy to Carry - Lightweight and portable, this magnetic protractor is perfect for on-the-go measurements. - Ideal for use on ladders, roofs, or in other challenging environments where stability is key. - A practical addition to any construction, carpentry, or DIY toolkit, ensuring precision in your projects.