The University of Arizona
College of Optical Sciences

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Monocular Opera Glass

Signature  

Date Early 1800s
Dimensions English Metric
Main Tube Length 1.9in 48mm
Main Tube Diameter 1.6in 41mm
Total Length 3.5in 90mm
Closed Length 2.5in 64mm
Objective Clear Aperture Diameter 1.2in 30mm

Description

This monocular has a short round bell-shaped barrel, made of ivory.  The objective lens is an achromatic doublet, contained in an ivory-covered brass cell.  It has one gold-plated brass draw, a single eye lens, and a flared ivory eyecup.  It is not signed by the maker.

 


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