A-C Network Calculator, inside mechanics, Illinois Institute of Technology, Chicago, Illinois, 1945 Electric network analyzers Electric power distribution--Equipment and supplies Illinois Institute of Technology. Department of Electrical Engineering Photograph of some of the inner mechanics of Illinois Institute of Technology's A-C Network Calculator. The A-C Calculator, used to test complex power systems in a controlled, miniature environment, was the tenth of its kind in the country. It was cooperatively purchased by Illinois Tech's Electrical Engineering department and a ten Midwest power companies for $80,000 in 1944. 1945 Still image Black and white photograph image/tiff islandora:1000264 0360401-I1-02-001 http://hdl.handle.net/10560/islandora:1000264 Office of Communications and Marketing photographs, 1905-1999 Illinois Tech Libraries Illinois Institute of Technology en Chicago (Ill.) In Copyright http://rightsstatements.org/vocab/InC/1.0/