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Collection Home > Telescopes > Monocular Multiple-Draw > Ivory Opera Glass
Ivory Monocular
| Signature | None |
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| Date | Early 1800s | |||||
| Number of Draws | 2 | |||||
| Dimensions | English | Metric | ||||
| Main Tube Length | 2.0in | 50mm | ||||
| Main Tube Diameter | 2.0in | 50mm | ||||
| Total Length | 4.2in | 107mm | ||||
| Closed Length | 2.4in | 60mm | ||||
| Objective Clear Aperture Diameter | 1.5in | 38mm | ||||
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Description |
This monocular has a two piece brass barrel, the forward section having a larger diameter. Both sections are covered with a fluted material resembling ivory. The objective lens is an achromatic doublet. It has two brass draws (lightly gold-plated), a single eye lens, and a flared eyecup. It is not signed by the maker. | |||||
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