To help educational media professionals in the task of equipment evaluation and selection, this book contains general and type-specific selection criteria for 13 items of audiovisual equipment. Also included are principles of operation and specific tests to assess equipment quality. An extensive dictionary of technical media equipment terms likely to be encountered in manufacturers' statements is presented. Names and mailing addresses of noncommercial organizations which offer audiovisual equipment services are also listed in the dictionary. Diagrams, sample equipment evaluation checklists, and a bibliography are included in the text. (KB)