Camera used at the Burden Neurological Institute to photograph 3 channel oscilloscopes in 1937

Camera used at the Burden Neurological Institute to photograph 3 channel oscilloscopes in 1937 and to photograph the toposcope display in the 1950s. It was loaded with a roll of 35 mm film which was mechanically advanced (with wound spring) into the cassette after each exposure. A knife cut the film and closed the cassette when all the photographs were taken. The shutter was opened and closed electrically. Stored in four parts, including two cassettes and a loose wooden piece.