Features A Useful Tool: Works effectively as a angle protractor, angle finder and a level measuring tool, also has digital display for easy operation. Smart Testing: Designed to have 4 x 90° wide test range, the digital angle meter can easily test the relative angle between different surfaces. Strong Magnet: There is strong magnet under the base, so the inclinometer can be firmly fixed on various curved and cylindrical metal material. Extensive Use: Allows for wide application in automotive, woodworking, machinery, equipments and many other fields, very practical and useful. Easy Carrying: Comes with a light weight and a compact size as well, the convenient storage and carrying enables both indoor and outdoor use. Specification: Item Type: Angle Finder Material: ABS Resolution: 0.05° Error: ± 0.2° Working Temperature: -10-50℃ Working Humidity: ≤ 85% Range: 4 x 90 ° Battery: 1 x 3.7V lithium battery, with built in battery. Single Battery Capacity: 260mAh Package List:1 x Angle Finder 1 x Data Cable1 x User Manual Package List 1 x Angle Finder 1 x Data Cable 1 x User Manual