leveling separately or simultausly. Provides accurate horizontal and vertical datum for indoor construction stakeout and calibration, easy to operate, and versatile. Suitable for flooring tile layout, paneling, wallpapering, stenciling, wainscoting, finish carpentry, wall stud layout and partition installation. You can have a try.Note:The output maker is located on the output hole.Do not stare directly at the light.Do not disassemble the instrument and perform internal repairs by yourself.This instrument meets the radiation safety standard.Specifications:Name: LevelMain material: plastics+metalBattery: 2* rechargeable battery, 3.7V, 1200mAh (included, you will find there are two batteries inside if disassemble one) ray: 360* 4, 16 lines wavelength: green light 520nm lines accuracy: ±0.2mm/10mSelf-levelling-range: ±3°Working distance: 25mWorking temperature: -5 to 50Item size:Level machine: 103* 106* 133mm/ 4.06* 4.17* 5.24inBattery size: 74* 53* 30mm/ 2.91* 2.09* 1.18inBase size: 96* 82* 73mm/ 3.78* 3.23* 2.87inWall-mounted bracket size: 160* 87* 72mm/ 6.30* 3.43* 2.83inIron-board: 100* 60* 12mm/ 3.94* 2.36* 1.47inLifting platform size: 111* 92* 33mm/ 4.37* 3.62* 1.30inCarrying bag: 233* 213* 152mm/ 9.17* 8.39* 5.98inItem weight: 1494g/ 3.29lbPackage size: 250* 220* 160mm/ 9.84* 8.66* 6.30inPackage weight: 1659g/ 3.66lbPacking List:1* Level Machine2* Battery1* Tripod Base1* Wall-mounted Bracket1* Iron Board1* Lifting Platform1* 1/4inch to 5/8inch Adapter1* Clip Holder1* Power Adapter (EU/UK/US-Plug Optional)1* Carrying Bag1* Guideline