Opera Glass, Monocular
Opera Glass, Monocular
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- Description
- This is a brass instrument with four draw tubes, and ivory around the eyepiece, objective lens and outer tube. The objective lens is achromatic and 1.25 inches diameter. The length overall is 2 inches closed, and 4.5 inches extended. The “RUBERGALL / London” inscription on the innermost tube refers to Thomas Rubergall (fl. 1802–1854), a mathematical, optical and philosophical instrument maker in London.
- Location
- Currently not on view
- Object Name
- monocular opera glass
- maker
- Rubergall, Thomas
- place made
- United Kingdom: England, London
- Measurements
- overall: 2 3/4 in x 1 3/4 in; 6.985 cm x 4.445 cm
- ID Number
- PH.323564
- catalog number
- 323564
- accession number
- 251552
- See more items in
- Medicine and Science: Physical Sciences
- Science & Mathematics
- Optics
- Data Source
- National Museum of American History
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