Pair of collapsible opera glasses binoculars

Pair of folding opera glasses binoculars with collapsible

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Pair of folding opera glasses binoculars with collapsible
Science Museum Group
© The Board of Trustees of the Science Museum

Pair of folding opera glasses binoculars with collapsible, nikel-plated brass frame, 'MARS' model, patented, French, 1890-1920.

Details

Category:
Optics
Collection:
Sir Henry Wellcome's Museum Collection
Object Number:
1983-318
Materials:
brass (copper, zinc alloy), nickel plated, steel (metal) and glass
Measurements:
overall (assembled): 65 mm x 100 mm x 70 mm,
overall (folded): 12 mm x 100 mm x 85 mm, Wt. 0.107kg
type:
opera glasses and binoculars
credit:
Wellcome Trust