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Other Gilbert Telescopes


Single-Draw Telescope

Signature Gilbert & Co., London

Date Circa 1800
Dimensions English Metric
Main Tube Length 37.5in 953mm
Main Tube Diameter 2.2in 57mm
Total Length 46.3in 1176mm
Closed Length 38.7in 983mm
Objective Clear Aperture Diameter 1.5in 38mm


This telescope has a round tapered mahogany barrel, wrapped with tape and painted red. The objective lens was an achromatic doublet, but the front lens is missing. The brass lens cell had a sliding cover, but it I also missing. It has a single brass draw (without retention), a four lens eyepiece, and a tapered eyecup, missing its slide cover. It is signed "Improv'd Sea Telescope Gilbert & Co. London" on the draw, with the eyecup to the left.


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