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Monocular Opera Glass
|Signature||haring Palais Royal 63 a Paris|
|Main Tube Length||2.2in||56mm|
|Main Tube Diameter||2.0in||50mm|
|Objective Clear Aperture Diameter||1.5in||38mm|
This monocular has a short round bell-shaped barrel, made of painted or colored ivory. The objective lens is an achromatic doublet and is contained in a brass cell. It has one brass draw (without retention), a single eye lens (chipped), and a flared brass eyecup. All the brass parts are silver-plated. It is signed "haring Palais Royal No. 63 a Paris" on the draw, with the eyecup above.
College of Optical Sciences
The University of Arizona, 1630 East University Boulevard, Tucson, Arizona U.S.A. 85721-0094
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