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Collection Home > Telescopes > Monocular Multiple-Draw > Brass Opera Glass
Brass Monocular
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| 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 | ||||
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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. |
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U.S.A. 85721-0094
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