Cambo's SCH-U precision-geared movement has important advantages over standard friction-locking ballheads and other 3-d schemes. Minute adjustments are precise and controllable. And because the Tilt movement is geared, it is selflocking. The Cambo 3-D Gearhead provides 140 degrees of selflocking tile, 90 degrees forward and 50 degrees back. 180 degrees manual side-to-side tilt movement features adjustable resistance. The SCH-U is equipped with the dedicated mount for the UST/UBS accssory system and mounts directly into the U-4 or UBA crossarm.