Abney level
[ ab-nee ]
/ ˈæb ni /
noun Surveying.
a hand level for determining elevations and angles of slope.
British Dictionary definitions for abney level
Abney level
/ (ˈæbnɪ) /
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 another point
Word Origin for Abney level
C20: named after Sir William
Abney (1843–1920), British chemist and physicist