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                                                                      EXHIBIT 23

                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation of our
reports included in this Form 10-K, into the Company's previously filed
Registration Statements on Form S-8 pertaining to the Company's 1984 and 1991
Stock Option Plans, filed on April 15, 1993, the 1995 Stock Option Plan, filed
on January 31, 1997, the Summa ESOP and 401(k) Stock Option Plan, filed on
September 8, 1997, and the Calnetics Stock Option Plan, filed on October 21,
1997, and the previously filed Registration Statement on Form S-4 pertaining to
the LexaLite Stock Option Plan, filed on September 9, 1996, with the Securities
and Exchange Commission under the Securities Act of 1933.


                                                   /s/ Arthur Andersen LLP

                                                   ARTHUR ANDERSEN LLP

Los Angeles, California
October 30, 1998