Collection Home > Telescopes > Monocular Multiple-Draw > Brass Opera Glass
|Number of Draws||5|
|Main Tube Length||.9in||22mm|
|Main Tube Diameter||1.8in||45mm|
|Objective Clear Aperture Diameter||1.6in||40mm|
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.
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