With a comfortable full working height of 58.3", and a minimum operating height of 20.3", the 6601UT features a quick-release platform with an integral bubble level, and a second circular bubble level at the critical tripod collar for precise camera/tripod alignment. Also standard with the 6601UT is a precision-geared center column, accessory 1/4 x 20 mounting stud on the center column, and retractable spiked feet. The 6601UT provides all this in addition to the full set of features found on the Sunpak 2001UT.