Base::Quantity UnitsSchemaInternal::schemaPrefUnit(const Base::Unit &unit,QString &outUnitString)
{
	if(unit == Unit::Length){
		outUnitString = QString::fromAscii("mm");
		return Base::Quantity(1.0,Unit::Length);
	}else{
		outUnitString = QString::fromAscii(unit.getString().c_str());
		return Base::Quantity(1,unit);
	}

}