title: Does anyone know a library for working with quantity/unit of measure pairs?
body: <p>I would like to be able to do such things as</p>
  
  <pre><code>var m1 = new UnitOfMeasureQuantityPair(123.00, UnitOfMeasure.Pounds);
  var m2 = new UnitOfMeasureQuantityPair(123.00, UnitOfMeasure.Liters);
  
  m1.ToKilograms();
  m2.ToPounds(new Density(7.0, DensityType.PoundsPerGallon);
  </code></pre>
  
  <p>If there isn't something like this already, anybody interested in doing it as an os project?</p>