Photograph, Optical Munitions, Opttical Prisms

Physical description

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo showing four assorted optical prisms on a black background. A fifth specimen shows a sandwich glass “prism” assembly prior to cutting and polishing.

Inscriptions & markings

In ink on lower left hand corner : “25”.

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