The Wimberley WH-200 Gimbal Tripod Head II with Quick Release Base is a gimbal-type tripod head that incorporates an elevated tilt mechanism and adjustable platform to make the camera/lens' center of gravity and tilt axis of the head be perfectly aligned.
Things once thought of as impossible with a ball head are nothing short of mundane with a Wimberley, because a weightless camera/lens combo (even a 600mm f/4 w/ large body) can literally be controlled with one finger. Point the rig where you want and take the hand away, and it stays exactly where you put it.
The Version II head is more compact and lightweight, features a redesigned panning base, "soft-touch" knobs, and includes a built-in Arca-type compatible quick release base. An Arca-type quick release plate is required and is available separately.
Distance from the mounting surface of the platform to the tilt axis: Adjustable from 1.1 to 4.8" (2.8 to 12.2cm).