Dotting machine, English, 1918-1926.
© Science Museum / Science & Society Picture Library
Dotting machine in a wooden case, for testing accident-pronenes in industrial workers. This device was used by psychologists May Smith and Millais Culpin of the Industrial Fatigue Research Board; a body originally set up to study the health of munitions workers during World War I. Manufactured by Edgar Schuster in England, 1920-1940.