The University of Arizona
College of Optical Sciences

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Single-Draw Telescope


Date Early 1800s
Dimensions English Metric
Main Tube Length 30.5in 775mm
Main Tube Diameter 2.2in 57mm
Total Length 40.0in 1016mm
Closed Length 31.7in 805mm
Objective Clear Aperture Diameter 2.1in 53mm


This telescope has a round very slightly tapered mahogany barrel. The objective is an achromatic doublet with a push-on lens cap that is missing. It has a single brass draw, a four lens eyepiece, and a tapered eyecup with a slide cover. It is not signed by the maker.


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

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