The University of Arizona
College of Optical Sciences

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French Three-Draw Telescope

Signature  

Date Late 1800s
Dimensions English Metric
Main Tube Length 7.5in 191mm
Main Tube Diameter 1.6in 41mm
Total Length 23.0in 584mm
Closed Length 8.0in 203mm
Objective Clear Aperture Diameter 1.3in 34mm

Description

This telescope has a round parallel brass barrel, covered with a brown woven material. The objective lens in an achromatic doublet, with a push-on lens cap. It has three brass draws, a four lens eyepiece, and a flared eyecup with a swivel cover. It is not signed by the maker.

 

 

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