Collection Home > Telescopes > Monocular Multiple-Draw > French Opera Glass
|Signature||Cauchoix Quai Voltaire a Paris|
|Number of Draws||2|
|Main Tube Length||1.3in||33mm|
|Main Tube Diameter||1.4in||35mm|
|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 á Paris"
College of Optical Sciences
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