A bearing block is provided that may be used with a drag bit body or frame to limit depth of cut of cutters on a bit. With this arrangement, a plurality of images can be easily and effectively synthesized. It is determined whether at least a threshold number greater than one of the capacitive sensors within the array are concurrently actuated by the user interaction. Rotatable fasteners may be connected to the horizontal stems to support rotation of a connected sign in an axis parallel to the horizontal stems. This results in an especially comfortable and ergonomic seating position, and in particular a situation in which the office chair is pushed away from the footrest when the footrest is not needed.