/**
* <summary>
* Returns the measuring unit for the measured value.
* <para>
* </para>
* <para>
* </para>
* </summary>
* <returns>
* a string that represents a physical unit.
* </returns>
* <para>
* On failure, throws an exception or returns <c>YDataSet.UNIT_INVALID</c>.
* </para>
*/
public virtual string get_unit()
{
return(_objref.get_unit());
}