V4 Macro Boom Arm is an ingenious new mechanism combining a geared/slide elevator with a 180 degree tilt arm and a 360 degree horizontal pan. It is quick and easy to use: a single twist of the grip at the end of the multi-angle arm loosens both the tilt and rotation, and when the arm is in the desired position, a twist of the grip in the opposite direction re-engages the lock and the arm is fixed again.