to adjust to height of the tripod, smooth and effort saving.With fixed plectrum to control to extend length to lock it tightly.Suitable to most of level with 5/8" interface.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+metalType: blue-EU Plug, blue-US Plug, blue-UK Plug, green-EU Plug, green-US Plug, green-UK Plug (optional) class: class 2, output power 1mWLine type: 4* 360°Wavelength: 532nm(Green)Battery: 2* rechargeable lithium battery, 3.7V, 2400mAh(included)Horizontal/vertical: ±0.2mm/10mAutomatic leveling-range: ±3°Working temperature: -5 to 50Waterproof grade: IP54Working distance: 25mTripod stand interface: 5/8"Level machine: 130* 102* 134mm/ 5.12* 4.02* 5.28inTripod base size: 96* 82* 72mm/ 3.78* 3.23* 2.83inWall-mounted bracket size: 161* 71* 89mm/ 6.34* 2.80* 3.50inIron-board: 100* 60* 12mm/ 3.94* 2.36* 1.47inLifting platform size: 127* 90* 30mm/ 5.00* 3.54* 1.18inCarrying bag size: 220* 233* 150mm/ 8.66* 9.17* 5.91in1.2m tripod stand size: 560* 105* 90mm/ 22.05* 4.13* 3.54inPackage size: 440* 215* 255mm/ 17.32* 8.46* 10.04inPackage weight: 2455g/ 5.41lbPacking List:1* Level Machine2* Battery1* Battery Recharger1* Tripod Base1* Wall-mounted Bracket1* Iron Board1* Lifting Platform1* Remote Controller1* 1/4inch to 5/8inch Thread Adapter1* Carrying Bag1* Guideline1* Tripod Stand