folding achromatic refracting telescope, opera glass type, with leather case, by Watkins and Hill, London, England, c. 1840.
Details
- Category:
- Optics
- Object Number:
- 1921-811
- Materials:
- copper (alloy), brass (copper, zinc alloy), glass, leather and cardboard
- Measurements:
-
overall (assembled): 40 mm x 80 mm x 50 mm, , .05kg
case (closed): 25 mm x 80 mm x 45 mm, ,
- credit:
- Court, Thomas Henry
