GemRed 82413 Digital Protractor Angle Finder Gauge Inclinometer with Backlight and Magnetic Base IP65 Accuracy 0.1 at 0and 90; 0.2 at the rest angle. Resolution: 0.05. Working temperature: -10 ~+50 Compact and portable body.Waterproof and dustproof grade: Ingress Protection 65 Strong magnetic base. Large display with backlight. Battery included *There is a protective film on the display. If any scratches on it when you receive the product, please check whether it is on the film and contact seller at once. With absolute level sensor, no need to calibrate by your self With backlight, easy to read Setup of precise machines Display always reads upright, no matter which way it is turned Low battery indicator <span class="a-text-bold">Item No.:</span> 82413-00B <span class="a-text-bold">Measuring range:</span> 4*90 degree <span class="a-text-bold">Working temperature:</span> 0 degree ~ +50 degree <span class="a-text-bold">IP Grade:</span> IP65 <span class="a-text-bold">Magnets:</span> Yes. Built in the base. <span class="a-text-bold">Battery:</span> 2*1.5V AAAlkaline battery(Included) <span class="a-text-bold">Battery life:</span> More than 100 hours in continuous using