The TRI-77P is a Tripod with manually adjustable height. The TRI-77P is manufactured from non-conductive material to minimise RF influence.

The centre post is 0.9m in length and can be adjusted in height by sliding it vertically within the collar. The adjustable centre post has a diameter of 40mm and has a ⅝ Inch UNC(m) at one end and a ⅞ Inch UNF(m) thread at the other end, adaptors are avilable to suit most threads.