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Collection Home > Telescopes > Binocular Opera Glass > Aluminum Galilean Binoculars
Aluminum Field Glass Binoculars
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| Date | Late 1800s | |||||
| Dimensions | English | Metric | ||||
| Tube Diameter | 2.5in | 65mm | ||||
| Total Length | 5.4in | 136mm | ||||
| Closed Length | 4.1in | 105mm | ||||
| Inter-Pupilary Distance | 2.6in | 65mm | ||||
| Objective Clear Aperture Diameter | 1.9in | 49mm | ||||
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Description |
This pair of Galilean binoculars has aluminum bell-shaped barrels, covered in leather. The large objective lenses are achromatic doublets and have short, extendable sunshades. The central thumbwheel is used for focusing. The barrel spacing is fixed and cannot be adjusted for eye separation. It comes with a fitted leather case marked "W G W". |
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