Certification : CEModel Number : Digital Protractoris_customized : YesMeasuring range: : 4*90Resolution: : 0.05Operating temperature: : 0 to 40 degreesWorking humidity: : 40-80% humidityPower battery: : 2*1.5V AAA battery (not included)Size: : about 58*57*24 mmProduct weight: : 57G360 Mini Digital Protractor Inclinometer Electronic Level Box Magnetic Base Angle Finder Measuring Tools Construction toolsDescription:1. Ultra-small size, portable design and simple operation2. The measuring surface is magnetic and can be attached to the metal surface3. High-precision resolution4. With conversion slope and slope percentage5. There are absolute and relative measurement modes6. Large clear LCD display7. Can measure data retention8. Calibration button to calibrate the meter to any reference surface.Specifications:Measuring range: 490Resolution: 0.05Operating temperature: 0 to 40 degreesWorking humidity: 4080% humidityPower battery: 21.5V AAA battery (not included)Size: about 585724 mmProduct weight: 57GNotice:1. Do not clean with organic solvents, keep away from water and corrosive substances2. Do not damage or wear the working surface, use a soft cloth to remove the dirt and maintain accuracy3. If the instrument is not used for a long time, the battery should be removed for storage.4. When the power supply voltage is too low, the battery symbol flashes, please replace the battery as soon as possible.5. Because this product is only suitable for two-axis measurement, when the third axis (front and back) and the horizontal angle are less than 45, the LCD displays the error message "error".