Source:Doron Precision Systems, Inc., Binghamton, NY (1971)
Doron Precision Systems, Inc. Singer Education & Training Products. 990 TV Camera. *A Trademark of The Singer Company. Cover: 3-D, B&W photograph, Features and Description. Inside cover: Accessories including Pan-and-Tilt units. Inside back cover: Technical Specifications. Back cover: Dimensional Drawings.