Case for Gregorian reflecting telescope of 2 1/2 inch aperture and 18 inch focal length by Benjamin Martin
- Object Number:
- 1919-326 Pt1
- type:
- component , storage boxes and instruments
Gregorian reflecting telescope of 2 1/2 inch aperture and 18 inch focal length by Benjamin Martin, London, on an altazimuth stand with a folding claw foot tripod and oak case.