/// <summary>
/// Creates a new instance of an derived unit.
/// </summary>
public DerivedUnit(UnitCompositeCollection units, Quantity quantity)
: base(new UnitCompositeCollection(units))
{
this.quantity = quantity;
}
/// <summary>
/// Creates a new distance feed constant unit based distance per rotation
/// </summary>
/// <param name="units">The distance feed per rotation</param>
protected FeedConstantUnit(UnitCompositeCollection units) :
base(units, Quantity.FeedConstant)
{
}
