Dewalt, Dw074kd, Lasers & Instruments, Power Tools, Rotary Lasers, Na Interior / Exterior Rotary Laser Kit With Horizontal Self Leveling And Weather Proof Design The Dewalt Self-Leveling Int/Ext Rotary Laser Is Extremely Durable And Efficient. This Amazing Tool Features A Enclosed Leveling Vial, Manual Leveling In Vertical Mode, For Jobsite Durability. Making These Even More Versatile Is The Horizontal Self-Leveling For Quick And Easy Set-Up. Features: Horizontal Self-Leveling For Quick And Easy Set-Up - Enclosed Leveling Vial, Manual Leveling In Vertical Mode, For Jobsite Durability - Protected Rotary Head And Weatherproof Design Deliver Interior And Exterior Jobsite Durability - Digital Laser Detector Extends Interior And Exterior Range To 600' - Standby Mode Allows The User To Pause The Laser While Transitioning From Horizontal To Vertical - Specifications: Power Supply: 2 D Alkaline Batteries - Accuracy Per 100 Ft: 1/4 In - Rotation Speed: 0, 60 Amp; 600 Rpm - Self-Leveling Range: ±5 ° - Indoor Visibility Range: 100 Ft - Range With Detector: 600 Ft - Laser Class: Iiia (Lt;5Mw) At 635nm - Tool Weight: 4.5 Lbs - Dewalt Is Firmly Committed To Being The Best In The Business, And This Commitment To Being Number One Extends To Everything They Do, From Product Design And Engineering To Manufacturing And Service.