Protractors descriptions： We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. Magnetic Digital Inclinometer Level Box Gauge Angle Meter Finder Protector. Features: Angle Finder/protractor Provides Quick&accurate Measurement in Woodworking, Construction, Machinery, Telecommunications, Automobile Etc. Extra LCD is Convenient to Read. Small and Light, It is Real Easy to Be Carried and Used. Measuring Plane Contains Disk Magnet Which Can Be Attached to the Surface to Be Measured. It is Especially Easy to Measure the Pitch of Helicopter, Bevel Angle of Miter Saw, Automobile Test and Repair and So On. Small and Light Makes It Convenient to Carry Powerful Built-in Magnets on the Base Secures the Attachment to Any Iron Surface Large Digital LCD Display with Backlight Fast and Accurate Measurements Auto Power off After 5 Minutes of No Operation Specifications: Measuring Range:4*90 °0-360 ° Accuracy: +/- 0.1 Degrees at 0 and 90 Degrees and 0.2 Degrees the Remainder Resolution: 0.01 Degree Waterproof: IP54 Power: 2*AAA Battery( Batteries Not Included) Package Included: 1X Digital Inclinometer Level Box 1X Manual . Products number : SOMONO158520