Boost Reach with Precision: How the Extender Tube and Top Extension Tube The top extension tube helps you get perfect precision when you do high-reach examinations. The extension tube gives you fixed, mechanical precision instead of having to guess where to put the jump markings or use equipment with loose or flexible arms. It lets you measure height in ways that go beyond the usual limits, giving you additional data points without losing accuracy. Visit Here: https://thetophopper.livejournal.com/628.html