The story
Named after Edward Hoppus, an 18th-century English surveyor.
Etymology from Wiktionary, CC BY-SA 4.0.
hoppus foot
Today it means: A unit of measurement for the volume of timber in the round, with a value equal to 1.27 cubic feet, where the cross-sectional area is taken as the square of one quarter of the circumference of the round. Full definition →