The CST/berger 8-Foot Maxi-Lite Aluminum Prism Pole 67-4708TMA has alternating red and white markings for surveying jobs with dual graduations in feet, tenths, and hundredths of a foot and centimeters. A 5/8 x 11-inch thread is at the top of the prism pole, and at the bottom of the pole is an adjustable tip. This prism pole's two aluminum sections are wear-resistant, extend to 8 feet, and collapse to 4.5 feet. Its soft, rubber knob easily loosens to adjust your length and tightens to lock your desired length. Attached to this 1.25-inch diameter prism pole you will also find a circular level vial.