Diffraction grating area 5 cm by 4.5 cm on 8 cm by 7.5 cm (approx) block of speculum metal
- Made:
- 1905-05-26
- maker:
- Archibald Campbell Campbell
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© The Board of Trustees of the Science Museum
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:
- speculum metal and brass
- Measurements:
-
130 mm
- credit:
- Tesseract
