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Other Gilbert Telescopes


Three-Draw Telescope

Signature Gilbert & Co. , London

Date circa 1800
Dimensions English Metric
Main Tube Length 4.7in 120mm
Main Tube Diameter 1.3in 32mm
Total Length 13.9in 353mm
Closed Length 5.3in 134mm
Objective Clear Aperture Diameter 1.1in 28mm


This telescope has a round parallel wood barrel covered with leather.  The push-on cap for the objective lens is missing.  The objective is an achromatic doublet, that appears to have been replaced.  It has three brass draws, a four lens eyepiece, and a flared eyecup with a sliding cover. It is signed "GILBERT & Co.   LONDON" on the eyepiece tube, with the eyecup to the left.



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