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.
- Object Number:
case, overall: 44 x 305 x 310 mm
- furnishing and equipment
- tools & equipment
- optical instrument
- optical instrument component
- diffraction grating
- Imperial College of Science,Technology & Medicine (Spectroscopy Group)
- Permanent collection
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