The Bosch GRL400H Self-Levelling Rotary Laser has a long working Range of 1300 ft. with Accuracy up to ±3/32\" at 100 ft. — Ideal for exterior applications. It has a robust design with a Glass-Enclosed Cage — for better protection and water/dust resistance (IP56). It has fast horizontal electronic self-levelling with a disturbance monitor that ensures consistent levelling accuracy on the jobsite. It includes a Rotary Laser Receiver that aids in detection at greater distances and two large, Easy to Grip Carrying Handles, a carrying case and D battery. GR 240 Professional Measuring Rod The Bosch GR 240 Professional Measuring Rod is the perfect tool for all floor height measurements. It is rugged, robust and high-quality, constructed of aluminium and extendible up to 2.4m. Appropriate for GLL 2; GLL 3-80 P; GLL 2-80 P; GLL 2-50; GRL 400 H; GRL 300 HV; GRL 300 HVG; BL 200 GC; GOL 20 G/D; GOL 26 G/D Professional.  Length 2.4m 2 sections Units of measure in m/cm Aluminium material BT 170 HD Professional Building tripod Quick locking due to Quick-Clamp-System High resistance to environmental influences 5/8\" thread adapter Work height - 107 - 165 cmWeight, approx - 5.5kg Tripod thread - 5/8\"x11