Pair of prismatic field glass binoculars
- maker:
- Ross Limited
Pair of prismatic ‘Porro’ type patent field glass binoculars, (8 power & 20mm objective lenses), Serial No. 2483, by Ross Limited, London, England, 1910-1920.
Details
- Category:
- Optics
- Object Number:
- 1979-856
- Materials:
- brass (copper, zinc alloy), zinc alloy, bakelite, leather and glass
- Measurements:
-
overall: 50 mm x 105 mm x 95 mm, Wt. 0.431kg
- type:
- field glasses and binoculars
- credit:
- Frank, Arthur
