The University of Arizona
College of Optical Sciences

Collection Home > Telescopes > Multiple Draw > Five-Draw Telescope

 

Five-Draw Telescope

Signature Unsigned

Date Mid-1800s
Dimensions English Metric
Main Tube Length 3.3in 84mm
Main Tube Diameter 1.3in 33mm
Total Length 11.5in 292mm
Closed Length 4.0in 101mm
Objective Clear Aperture Diameter 1.0in 25mm

Description

This Telescope has a round parallel brass barrel that is covered with imitation ivory. It has an extendable shade with a push-on lens cap. The objective lens is an achromatic doublet. It has five brass draws, the smallest of which is longer than the other four, an unusual construction. There is a four lens eyepiece and a flared eyecup with a swivel cover. It is not signed by the maker.

 

 

 

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