@Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Transducer that = (Transducer) o;

        if (lowerRangeLimit != that.lowerRangeLimit) return false;
        if (type != that.type) return false;
        if (upperRangeLimit != that.upperRangeLimit) return false;
        if (!physicalUnits.equals(that.physicalUnits)) return false;

        return true;
    }