A rarely-used (and probably obsolete) cgs unit of momentum. The bole is equal to 1 gram-centimeter per second (g.cm/s), or 10-5 kilogram-meter per second (kg.m/s) in SI units
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}