ABNEY LEVEL Meaning and
Definition
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An Abney Level is a versatile hand-held surveying instrument widely used by land surveyors and civil engineers. It consists of a sighting tube, a bubble level, and an adjustable vertical scale. Developed by Sir William de Wiveleslie Abney in the late 19th century, this instrument is primarily employed for levelling and measuring vertical angles.
The sighting tube of the Abney Level is similar to that of a telescope, equipped with crosshairs for accurate sighting. It allows surveyors to align the instrument with a specific target point or benchmark. The bubble level, located inside the instrument, serves to ensure that the device is properly leveled and aligned horizontally. By adjusting the vertical scale, users can measure the angle of inclination or elevation between the target point and the instrument. This measurement can then be used to calculate relative heights or gradients.
The Abney Level is particularly useful for outdoor applications, as it enables quick and precise measurements in the field. It is commonly employed in tasks such as topographic mapping, contour surveys, road construction, and building layout. The portability and simplicity of the Abney Level make it an essential tool for professionals who require accurate vertical angle measurements without the need for extensive equipment.
Overall, the Abney Level is an indispensable instrument in the field of surveying, enabling land surveyors and civil engineers to determine heights, slopes, and gradients with ease and accuracy.
Common Misspellings for ABNEY LEVEL
- zbney level
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- wbney level
- qbney level
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- abbey level
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- abnet level
Etymology of ABNEY LEVEL
The word Abney Level is named after its inventor, Sir William de Wiveleslie Abney. Born on July 24, 1843, Sir Abney was an English astronomer and photographer. He is known for his contributions to the field of photography, particularly in the development of emulsions and sensitizers for photographic plates. Abney also devised various scientific instruments, one of which was the Abney Level.
The Abney Level is a handheld instrument used for measuring angles and slopes, primarily in surveying and navigation. It consists of a sighting tube with a spirit level and a protractor, allowing users to measure the inclination or tilt of a surface accurately.
As Sir Abney invented this specific type of leveling instrument, it was named after him, hence the term Abney Level.
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