Nine prisms in wooden box

Made:: 1880-1900 in Birmingham

manufacturer:: Chance Brothers Limited

Nine prisms in wooden box, including a composite one made out of six different glasses, 5 by Chance of Birmingham, with MS list of the glasses, late 19th century (Wellcome B885)

Details

Category:: Optics

Collection:: Sir Henry Wellcome's Museum Collection

Object Number:: 1984-1340

type:: prism- optical, porro prism, erecting prism and porro–abbe prism

credit:: Wellcome Trust

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Parts

Collection of glass prisms

Nine prisms. 1) composite equilateral prism made out of six different types of glass 2) composite equilateral prism made out of three different types of glass 3) equilateral prism 4) regular rightangled prism 5) assymetrical right angled prism 6) two right angled prisms cemented together, one symmetrical, one assymetrical 7) sequence of three Porro-type prisms showing three stages of construction. [Five are made by Chance Brothers of Birmingham], late 19th century (Wellcome B885);