Used for very low angle (close to the ground) filming, or for mounting cameras on table-tops. A pan/tilt head is fitted into the bowl (substituting these tiny legs for the normal tripod legs). The legs have individually adjustable angles, with a releaseable catch stopping the legs from splaying wider than the illustrated position. The legs have feet with a hole running through them for bolting the hi-hat to something (a board, a table, et cetera), and the feet rotate (the red portion) so the legs can be spread at any angle. The feet have rubber pads, so the hi-hat can be used in a stand-alone mode, but it will probably need to be bolted down, so the camera doesn't topple over (the head, and the camera, sit above these legs with a high centre of gravity).
Currently, bolted to a board. Easily unbolted with a screwdriver and a small spanner.