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College of Optical Sciences

Collection Home > Telescopes > Monocular Multiple-Draw > French Opera Glass

 

French Monocular

Signature Cauchoix Quai Voltaire a Paris

Date Early 1800s
Number of Draws 2
Dimensions English Metric
Main Tube Length 1.3in 33mm
Main Tube Diameter 1.4in 35mm
Total Length 2.8in 72mm
Closed Length 1.6in 41mm
Objective Clear Aperture Diameter 1.1in 27mm

Description

This monocular has a short round bell-shaped ivory barrel.  The objective is an achromatic doublet.  It has two draws, a single eye lens, and a flared eyecup.  All the metal parts are brass, lightly gold-plated.  It is signed "Cauchoix Quai Voltaire Paris"

 

 

 


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