aerial photograph |
| noun
- A photograph taken from an aircraft of the ground below.
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aerial survey |
| noun '''aerial survey
- a method of collecting information by utilizing aerial photography. or from remote sensing technology using other bands of the electromagnetic spectrum, such as infrared, gamma-ray, or ultraviolet
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air base |
| noun
- An airbase.
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alidade |
| noun
- a sighting device used for measuring angles
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azimuth |
| noun
- An arc of the horizon intercepted between the meridian of the place and a vertical circle passing through the center of any object; as, the azimuth of a star; the azimuth or bearing of a line surveying.
- The quadrant of an azimuth circle.
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azimuth circle |
| noun - Instrument for measuring azimuths. It is a graduated circle on a sight, gun carriage, searchlight, etc.
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