<br>Have you ever thought about such a thing?The laser leveler tool is filled with dust after use it,and it is difficult to clean up.Besides,the line laser level cannot be used again after accidentally falling off the ground or shaking or raining.Many lazer level tool have the same problem,but this laser line leveler takes advanced technology to create new models with the following features: Waterproof, Dust-proof,Shockproof,which keeps you away from these troubles, its laser is Class 2, MAX OUTPUT<1mW, λ=520nm <br><br><b>In addition,this laser levels for construction have another FOUR advantages:</b> <br><b>1.Extended operation time</b>-This cross line laser level can provide 15-20 hours for your projects,which can be used for long time working <br><b>2.Widely application</b>-This lazer level tool designed for picture hanging, construction,writing,wall,home renovation.And Laser level for building,ceiling,basement,etc. <br><b>3.High Accuracy & Low Consumption</b>-Are you worried about the results of measuring when you use laser tool ?This line level with high accuracy and low consumption,its error range is ±4°,it would be a great help to your projects. <br><b>4.Self-leveling automatically</b>-This laser level self leveling could self leveling automatically, which would save you a lot of time <br><br> Whenever or whether you are trying to hang your pictures, mirrors and clock on the wall, or find the horizontal and vertical line in the ceilings and floors or other DIY projects or layout purposes in your house, or even have some larger construction projects,a laser level would be very helpful. Choose a best laser level tool would save you money and time, and this level tool meets both requirements at the same time <br><br> <br>This laser level tool has two switching models: <br><b>In lock model:</b> <br>3 measurement modes with vertical,horizontal and cross laser line for fixing the any angles