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College of Optical Sciences

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Single-Draw Telescope

Signature Lincoln, London

Date Late 1700s
Dimensions English Metric
Main Tube Length 37.0in 940mm
Main Tube Diameter 2.4in 60mm
Total Length 44.5in 1130mm
Closed Length 37.5in 955mm
Objective Clear Aperture Diameter 2.0in 50mm


This telescope has a round tapered mahogany barrel.  The push-on cap for the objective lens is missing and it may have had a sliding cover.  The objective is an achromatic doublet.  It has one draw (without a retainer), a four lens eyepiece, and a bulbous style eyecup, which is missing.  It is signed "Lincoln   LONDON" on the draw, with the eyecup to the left.


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The University of Arizona, 1630 East University Boulevard, Tucson, Arizona U.S.A. 85721-0094

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