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LicenseModel to illustrate the 'Porro' optical erecting system used in
Science Museum Group
© The Board of Trustees of the Science Museum
Model to illustrate the 'Porro' optical erecting system used in some prism binoculars, unsigned, European, 1930-1950. Consists of two 'Porro' type glass prisms cemented to a thin circular glass disc.
Details
- Category:
- Optics
- Object Number:
- 1955-321
- Materials:
- glass and Canada balsam
- Measurements:
-
overall: 30 mm x 45 mm x 42 mm, Wt. 0.033kg
- type:
- model - representation and prism - optical
- credit:
- Banfield, Arthur Clive
