Concave diffraction grating on speculum metal, gra

Made:
1910-1948 (estimated) in London
maker:
Adam Hilger Limited

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Concave diffraction grating on speculum metal, grating area 27 x 19 mm, on black enamelled metal stand with three levelling feet, fine adjustment for setting grating vertical, and sliding metal cover for grating, signed 'ADAM HILGER LTD / LONDON', estimated date 1910-1948.

Details

Category:
Optics
Object Number:
2000-1451
Materials:
metal and speculum metal
type:
diffraction grating - reflection
taxonomy:
  • furnishing and equipment
  • tools & equipment
  • optical instrument
  • optical instrument component
  • diffraction grating
credit:
Imperial College of Science,Technology & Medicine (Spectroscopy Group)