This pole features the SECO TLV locking mechanism.
The SECO twisting lock with vial (TLV) is wear-resistant for long life.The soft rubber knob is easy to tighten or loosen,even when wearing gloves! TLV's feature a convenient 40-minute vial built into the lock.
Moving the vial to the lock frees up space on the pole for other accessories!
It's constructed of sturdy aluminum tubing and a two-stage brass adjustable top-threaded tip.
It's finished with electrostatic powder paint coating on the outer pole and permanent silk-screened dual graduations on the inner pole.
The two-stage 5/8x11-threaded tip adjusts for accurate H.T. A range of 50mm to 135mm prism heights can be achieved.
Weighs 5.38 lb (1.5 kg)