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French Four-Draw Telescope


Date Late 1800s
Dimensions English Metric
Main Tube Length 9.5in 241mm
Main Tube Diameter 2.4in 60mm
Total Length 35.5in 902mm
Closed Length 10.4in 264mm
Objective Clear Aperture Diameter 1.8in 46mm


This telescope has a round parallel brass barrel, covered with brown leather. It has an extendable shade with a push-on lens cap. The objective lens is an achromatic doublet. It has four brass draws, a four-lens eyepiece, and a flared eyecup with a swivel 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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