• This prism pole features the SECO TLV(tm) (Twist Lock with Vial) locking mechanism.
• The rubber locking knob is easy to tighten or loosen even with gloves on.
• The 40 minute bubble vial is built into the lock, leaving plenty of room on the pole for your other accessories (only on the 8ft and 12ft poles).
• Vial replacement and calibration are made easy by the screws under the vial housing.
• The pole is constructed of sturdy aluminum tubing
• There is a two-stage brass adjustable top-threaded tip (double locking jam nut).
• It's finished with a red and white electrostatic powder paint coating on the outer pole and permanent silk-screened dual graduations on the inner poles.
• Dual Grad (0.01 ft/cm)
• Each Prism Pole comes with a steel bodied prism pole point. 

Pole Details:

• 5500-11: 8ft Pole Extends to 8.53ft, collapses to 4.97ft, weighs 3.3lb
• 5500-21: 12ft Pole Extends to 11.81ft, collapses to 5.18ft, weighs 5.1lb
• 5500-30: 15ft pole Extends to 15.25ft, collapses to 5.41ft, weighs 7.6lb

Parts Available