A traditional German unit of liquid volume, no longer in use. The ohm, spelled aume in English, was generally equal to 1/6 fuder or roughly 150 liters (40 U.S. gallons)
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}