This image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicensePocket brass Gregorian reflecting telescope, speculum mirror
Science Museum Group
© The Board of Trustees of the Science Museum
Pocket brass Gregorian reflecting telescope, speculum mirror, in leather case, unsigned, English, 1740-1800.
Details
- Category:
- Optics
- Collection:
- Sir Henry Wellcome's Museum Collection
- Object Number:
- 1997-1980
- Materials:
- brass (copper, zinc alloy), speculum (alloy of copper and tin), shagreen, wood (unidentified), paper (fibre product) and velvet
- Measurements:
-
overall (telescope): 35 mm x 185 mm x 40 mm,
overall (case): 45 mm x 200 mm x 60 mm, Wt. 0.313kg
- type:
- terrestrial telescope and telescope - gregorian
- credit:
- Wellcome Trust
