Coarse plane diffraction grating for infrared radiation
- Made:
- 1960-1969 (estimated) in Great Malvern
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Science Museum Group
© The Board of Trustees of the Science Museum
Coarse plane diffraction grating for infrared radiation, 254 x 254 mm, ruled on a metal plate attached to an aluminium block, marked 'MADE BY RRE MALVERN' [Royal Radar Establishment Malvern] and '.004" PITCH 25º BLAZE ANGLE' on two edges of the block, glued into a hinged wooden case with a plastic name plate on top.
