udunits/src/main/java/ucar/units/DerivedUnitImpl.java
@Override
    public final boolean isCompatible(final Unit that) {
        final DerivedUnit unit = that.getDerivedUnit();
        return equals(unit) || isReciprocalOf(unit);
    }
@Override
    public final boolean isCompatible(final Unit that) {
        final DerivedUnit unit = that.getDerivedUnit();
        return equals(unit) || isReciprocalOf(unit);
    }
@ Override public final boolean isCompatible ( final Unit that ) { final DerivedUnit unit = that . getDerivedUnit ( ) ; return equals ( unit ) || isReciprocalOf ( unit ) ; }
Indicates if values in this unit are convertible with another unit.

@param that
The other unit.
@return <code>true</code> if and only if values in this unit are
convertible to values in <code>
that</code>.
Indicates if values in this unit are convertible with another unit .