The University of Arizona
College of Optical Sciences

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

 

Brass Monocular

Signature  

Date  
Number of Draws 5
Dimensions English Metric
Main Tube Length .9in 22mm
Main Tube Diameter 1.8in 45mm
Total Length 3.9in 100mm
Closed Length 1.3in 32mm
Objective Clear Aperture Diameter 1.6in 40mm

Description

This monocular has a very short round parallel brass barrel, covered with a white material resembling ivory.  The single objective lens is non-achromatic.  It has five brass draws (lightly gold-plated), a single eye lens, and a flat disc-shaped eyecup.  It is not signed by the maker.

 

 


College of Optical Sciences
The University of Arizona, 1630 East University Boulevard, Tucson, Arizona U.S.A. 85721-0094

All contents copyright 2008  Arizona Board of Regents.