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Collection Home > Telescopes > Monocular-Single Draw > Monocular Opera Glass
Galilean Monocular
| Signature | Nairne + Blunt 20 Cornhill London |
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| Date | Circa 1780 | |||||
| Dimensions | English | Metric | ||||
| Main Tube Length | 1.3in | 34mm | ||||
| Main Tube Diameter | 1.2in | 31mm | ||||
| Total Length | 2.4in | 62mm | ||||
| Closed Length | 1.9in | 48mm | ||||
| Objective Clear Aperture Diameter | 1.0in | 25mm | ||||
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Description |
This monocular has a short round parallel ivory barrel, covered with a veneer of tortoise shell. The single objective lens is non-achromatic. It has one draw, made of either silver or silver-plated brass. There is a single eye lens and a flared ivory eyecup. It is signed "NAIRNE + BLUNT 20 CORNHILL, LONDON" on the face of the ivory ring retaining the objective. It has a fish skin covered case. |
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