Pipe laser RedBack Lasers DrainRight DR100 features electronic levelling and grade setting from the included remote control.  The DR100 has a diameter of under 100mm allowing insertion in 100mm drainage pipes and comes with five sets of feet for easy use with 125mm, 150mm, 200mm, 225mm and 300mm pipes.  Featuring a bright Class 3 Red Laser Dot this pipe laser can be operated up to 150m with target.  This pipe laser is powered by a high-capacity Li-ion battery offering up to 36hrs of use.  There is also a backup standard "C" cell battery holder allowing the use of standard batteries if required. The DrainRight DR100 has a levelling accuracy of 1.5mm over 30m and a gradient range that can be set between -20.000 % and +30.000 %.  This combined with its 100mm form factor and kit with a full range of pipe-size leg sets supplied as standard makes this pipe laser one of the best units available. To use, simply place the unit either within or on top of the pipe you are working with.  The laser level will quickly self-level and a grade can be entered into the DR100 either using the keypad or the handy remote control as a percentage grade to three decimal places.  The grade entered will be saved ready for your next run even after powering off.  The large high-contrast LCD display on the pipe laser is easy to see from distance in all lighting conditions. The DrainRight DR100 is made with a robust cast metal housing and boasts an IP68 rating making it highly water and dust-proof.  The DR100 pipe laser comes with a 3 Year Warranty and comes with a certificate of calibration. Accessories featured in photos or video may be OPTIONAL, at an extra cost. Specifications may change without notice.