The stabila nl telescopic leveling rod is made from anodised aluminium it is extendable up to 24m with a scale in mm graduations the adjustment slide ensures optimal display clarity and trouble free height definition suitable for all stabila laser receivers and receiving units how to use 1 align the rods zero mark to the laser beam 2 move the receiver on the levelling rod to bring it back in line with the laser beams height at the new measurement point 3 the height difference plus or minus can n