A rotary actuator, in particular for adjustable articles of furniture, including beds or mattress supports, for incorporation in a structure for adjustment of an element in it, e. Means for Solution The crusher is constituted such that a hammer head is connected to a piston, when compressed air is not applied to the piston, the hammer head is elastically urged to a standby position and when compressed air is applied to the piston, the hammer head is moved from the standby position to collide with the silicon lump. The aggregated credibility data is processed and ordered to present different dimensions of entity credibility, with each dimension graphically presented in the interface portal through an interactive credibility module. Integral downwardly facing resilient legs are placed just above and below the user’s orbital ridge so that when the legs are squeezed and released, the user’s eye lids are forced open allowing the user to dispense a precise amount of solution into his or her eye. Similar to the outbound cells, the inbound cells have any of the virtual channel identifiers assigned to the demultiplexers.