Abney level

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Abney level

(ˈæbnɪ)

(Surveying) a surveying instrument consisting of a spirit level and a sighting tube, used to measure the angle of inclination of a line from the observer to another point

[C20: named after Sir William Abney (1843–1920), British chemist and physicist]

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Noun

Abney level - a surveying instrument consisting of a spirit level and a sighting tube; used to measure the angle of inclination of a line from the observer to the target

surveyor's level - surveying instrument consisting basically of a small telescope with an attached spirit level rotating around a vertical axis; for measuring relative heights of land

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Other prerequisites include the ability to do the following: identify common forage grasses and legumes; use a soil survey; know how to do RUSLE calculations; be able to use an Abney level or clinometer, and know how to interpret features on an aerial photograph.

Professional development through workshops and conferences

For years, manual measurements were taken with burden poles, measuring tapes, abney levels, transits and the blaster's best guess.

A better blast: growing use of stereo photogrammetry delivers simplified advanced profiling for surface and underground mining operations

Abney levels are hand-held levels, but they are more sophisticated than hand levels.