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Binocular telescopes, or binoculars (also known as field glasses), are two identical or mirror-symmetrical telescopes mounted side-by-side and aligned to point accurately in the same direction, allowing the viewer to use both eyes (binocular vision) when viewing distant objects.

Binocular Telescope

Binocular telescopes, or binoculars (also known as field glasses), are two identical or mirror-symmetrical…

An optical device, such as a pair of field glasses or opera glasses, designed for simultaneous use by both eyes and consisting of two small telescopes joined with a single focusing device.

Double Telescope Binocular

An optical device, such as a pair of field glasses or opera glasses, designed for simultaneous use by…

Boulanger succeeded in producing a binocular of an entirely new type in 1859.

Binoculars

Boulanger succeeded in producing a binocular of an entirely new type in 1859.

The model of binoculars invented by E. Abbe.

Binoculars

The model of binoculars invented by E. Abbe.

An illustration of a binocular microscope.

Binocular Microscope

An illustration of a binocular microscope.