Pair of 'Porro' type erecting glass prisms (90º of reflection), unsigned, European, 1920-1950.
Details
- Category:
- Optics
- Object Number:
- 1955-324
- Materials:
- glass
- Measurements:
-
overall (each): 21 mm x 43 mm x 21 mm, Wt. overall 0.055kg
- type:
- porro prism and component - object
- credit:
- Banfield, Arthur Clive
