Two brown glass filters in folding horn case

Made:
1700-1799 in Europe

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© The Board of Trustees of the Science Museum

Two coloured glass filters, light and dark brown, in horn frames and folding strippy horn case, unsigned, European, 1700-1799. Probably used as a sketching aid by an artist.

Details

Category:
Optics
Object Number:
1983-321
Materials:
brass (copper, zinc alloy), glass and horn
Measurements:
overall (closed): 15 mm x 62 mm x 30 mm,
overall (open): 15 mm x 100 mm x 65 mm, Overall Wt. 0 .013kg
type:
optical drawing aid
taxonomy:
  • furnishing and equipment
  • tools & equipment
  • furnishing and equipment
  • tools & equipment
  • optical instrument
  • optical instrument component
  • optical filter
credit:
Wellcome Trust