Inventors:
George J. Bredehorn - Wantagh NY
International Classification:
G09B 300
Abstract:
An educational device with which a user employs selected positioning of two masks over an array of normally unintelligible information to decipher an intelligible message therefrom, the positioning of the masks being determined by correctly associating useful information on a base member carrying the unintelligible information with markers and indicia carried on the masks and base member.