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Abney level
Abney level
/ˈeɪbni ˈlɛvəl/
noun
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
(
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
Surveyors often use the Abney level to measure land gradients.
Surveyors often use the Abney level to measure land gradients.
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