Feature: 1. Ultra-small size, portable design and simple operation. 2. The measuring surface is magnetic and can be attached to a metal surface. 3. High resolution. 4. Has a conversion slope and slope percentage. 5. There are absolute and relative measurement modes. 6. Large clear LCD display. Specification: Features： Ultra-small size, portable design and simple operation. The measuring surface is magnetic and can be attached to a metal surface. High resolution. Has a conversion slope and slope percentage. There are absolute and relative measurement modes. Large clear LCD display. Data retention can be measured. Specifications： Color：Black Measuring Range: 4 × 90 ° Resolution: 0.05° Operating Temperature: 0 ～ 40 degrees Working Humidity: 40 ～ 80% humidity Power Battery: 2*1.5V AAA battery (not included) Size: about 58 * 57 * 24 mm / 2.28 * 2.24 * 0.94 Weight: 71g / 2.50oz Package List: 1 * Measuring Instrument 1 * Instruction Manual Package List: 1 * Measuring Instrument 1 * Instruction Manual