Concave diffraction grating on speculum metal
- Made:
- 1910-1948 (estimated) in London
- maker:
- Adam Hilger Limited
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Science Museum Group
© The Board of Trustees of the Science Museum
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:
- speculum metal and metal
- Measurements:
-
overall: 60 x 82 mm
- credit:
- Imperial College of Science,Technology & Medicine (Spectroscopy Group)
