A unit of angle measure, sometimes used at sea, equal to 1/4 of a compass point (See: Point [1]). In this use, a quarter equals 2°48'45" = 2.8125° or pi/64 = 0.049 087 radian
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}