Abstract: A switch assembly controls a plurality of circuits through contact carrying walls of a switch housing disposed in angular relation to each other about a guide post slidably mounting actuator elements that are displaceable to pivot contactors into engagement with the contact carrying walls. The housing depends from a support panel through which the actuator elements are manually manipulated.

Abstract: A display panel surface of a control board is divided into a plurality of zones at which manually operable switch devices are mounted to register zone selections by the user. The switch devices carry changeable zone identifying indicia of a type enabling use of the control board by sight handicapped persons.

Abstract: Game board devices to be used as bingo cards are provided with changeable numbering sequences capable of being more readily perceived and remembered by sight handicapped persons. Through switches on the game board card, chance selected numbers may be registered by each player and through parallel circuits produce an audible sound when a winning game is achieved upon closure of those switches corresponding to predetermined patterns on the game board.