Opera Glass, Monocular

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. There is a “RUBERGALL / London” inscription on the innermost tube. Thomas Rubergall (fl. 1802–1854) was a mathematical, optical and philosophical instrument maker in London.

Maker: Rubergall, Thomas

Location: Currently not on view

Place Made: United Kingdom: England, London

See more items in: Medicine and Science: Physical Sciences, Science & Mathematics, Optics

Exhibition:

Exhibition Location:

Data Source: National Museum of American History

Id Number: PH.323564Catalog Number: 323564Accession Number: 251552

Object Name: monocular opera glass

Measurements: overall: 2 3/4 in x 1 3/4 in; 6.985 cm x 4.445 cm

Guid: http://n2t.net/ark:/65665/ng49ca746ae-0fd1-704b-e053-15f76fa0b4fa

Record Id: nmah_1460038

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