The University of Arizona
College of Optical Sciences

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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


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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