Diffraction grating area 5 cm by 4.5 cm on 8 cm by

Made:
1905-05-26
maker:
Archibald Campbell Campbell

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Diffraction grating area 5 cm by 4.5 cm on 8 cm by 7.5 cm (approx) block of speculum metal, mounted in a blackened brass cell with slide-off glass cover and levelling feet, made by (or for) Lord Blythswood [Archibald Campbell Campbell], with "Blythswood, May 26, 1905, 24953 lines cut, H.[?]S.A." scratched on speculum surface

Details

Category:
Optics
Object Number:
1998-692
Materials:
brass and speculum metal
type:
diffraction grating - reflection
taxonomy:
  • furnishing and equipment
  • tools & equipment
  • optical instrument
  • optical instrument component
  • diffraction grating
credit:
Tesseract