Basic Electricity: 12 -- Miscellaneous Electrical Equipment: International Film Bureau

Consultant, James M. McGrath, Lane Technical High School, Chicago; Covers the relay: diagrammatic description of operation, meters, diagrammatic description of moving coil, function of potentiometer in a circuit, and the rheostat

Related films

Sources

  1. 16mm Filmography (legacy record) — title, creator, format, sound, genre, description, catalog record