The University of Arizona
College of Optical Sciences

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Threaded Loupe

Signature None

Date Early 1800s
Number of Draws 1
Dimensions English Metric
Main Tube Length 2.0in 51mm
Main Tube Diameter 1.6in 40mm
Total Length 3.0in 75mm
Closed Length 2.2in 56mm
Objective Clear Aperture Diameter 1.0in 25mm


This loupe or magnifier has a short round bell-shaped barrel, covered with brown leather.  It has a single draw, with a screw thread on it.  There are two lenses which remain equidistant from each other. Both lenses are mounted to the draw. 




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

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