Glass block, shaped like half a lens

Made:
1850-1924

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© The Board of Trustees of the Science Museum

Glass block, shaped like half lens but probably not for optical use, in leather case, made 1850-1924 (Wellcome No. B875)

Details

Category:
Optics
Object Number:
1997-1953
Materials:
brass (copper, zinc alloy), cardboard, felt, glass, leather, paper (fibre product) and wood (unidentified)
Measurements:
overall (case closed): 29 mm x 63 mm x 43 mm, 0.062kg
overall (case open): 24 mm x 63 mm x 83 mm, 0.062kg
type:
optical glass
taxonomy:
  • inorganic material
  • glass - material
credit:
Wellcome Trustees