field glass
Definition
Noun: A small, portable optical instrument, typically handheld, that uses lenses to magnify distant objects. It consists of two small telescopes mounted side-by-side, one for each eye, allowing for binocular vision.
Usage
The term "field glass" is used to refer to a compact, often low-magnification telescope designed for outdoor observation. It is a specific type of optical device. * The birdwatcher raised her field glass to get a better view of the eagle's nest. * He always carried a field glass in his pack during hikes to observe distant landmarks.
Advanced Usage
- "To train one's field glass on something": To point and focus the device on a specific object or area.
- The naturalist trained his field glass on the herd of deer across the valley.
Variants and Related Words
- Binoculars (n): A more common modern synonym for a handheld, two-eyed magnifying optical instrument. While "field glass" can be synonymous with binoculars, historically it might also refer to a simple monocular (single-eye) spyglass.
- Spyglass (n): A small, single-tube telescope, often collapsible.
- Telescope (n): A broader term for any instrument designed to make distant objects appear nearer, which can be large and mounted or small and portable.
Synonyms
- Binoculars
- Spyglass (for a monocular type)
- Opera glasses (a specific type for theater use)
Related Phrases
- Field of view: The extent of the observable area seen through an optical instrument.
- This field glass has a wide field of view, perfect for scanning the horizon.
Noun
-
a small refracting telescope
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