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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
- Collection:
- Sir Henry Wellcome's Museum Collection
- Object Number:
- 1983-321
- Materials:
- horn, glass and brass (copper, zinc alloy)
- 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:
- colour filter and optical drawing aid
- credit:
- Wellcome Trust