The connector to the electronics is in the foreground. The hex key at the right is in one of the leveling screws. Behind and just to the left of the right-hand stop is a black (not quite vertical) bar. This is the edge of the cylindrical ceramic magnet for the feedback coil. The thin-walled brass tube protruding from the mass is the end of the boom, and the brass suspension web extends up from the mass and out of the picture at the top.