four projectors on wooden board
Date: 1970-1985
Inventory Number: 2004-1-0291
Classification: Optical Projection System
Dimensions:28 x 51 x 25 cm (11 x 20 1/16 x 9 13/16 in.)
Accessories: electric cord
Description:
Lab-crafted mini projectors, four in series mounted on a rectangular piece of polished wood, on which standard slides could be affixed. Two of the slide holders have blue filters. Each projector is made of a simple metallic box on top of which is a fan or cooling unit made of a commercial hair dryer purchased at the Harvard COOP.