Stereoscopic viewing apparatus, for x-ray plates, reflecting type, by Victor X-Ray Corporation, Chicago, USA, c.1925

3-D or stereoscopic viewing helps give visual depth to 2-D X-ray plates. It makes ‘reading’ an X-ray easier. This machine was developed by Victor X-ray Corporation of Chicago, US. It was patented in 1911. It has two backlit intensifier screens and uses mirrors to view X-ray images of the body.

Consultant radiologist Dr George Simon (1902-1977) used this viewer at his practice in Upper Wimpole Street, London until the 1960s.