Super Foot 1 : A British commercial unit of area equal to one square foot. The name originated as an abbreviation (ft. super. or super. ft.) for the superficial foot
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}