SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549



                                  Schedule 13G


             Information Statement Pursuant to Rules 13d-1 and 13d-2
                    Under the Securities Exchange Act of 1934
                               (Amendment No. 1)



                       BEI Medical Systems Company, Inc.
                       ---------------------------------
                                (Name of Issuer)



                                  Common Stock
                         -------------------------------
                         (Title and Class of Securities)


                                   05538E1091
                         -------------------------------
                                 (CUSIP Number)




Check the following box if a fee is being paid with statement ___. (A fee is
not required if the reporting person: (1) has a previous statement on file
reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7).

- --------------------------------------------------------------------------------

         The information on the remainder of this page shall not be deemed to be
"filed" for the purpose of Section 18 of the Securities Exchange Act of 1934
("Act") or otherwise subject to the liabilities of that section of the Act but
shall be subject to all other provisions of the Act (however, see the Notes).





Cusip 05538E1091

                                       13G
- --------------------------------------------------------------------------------
1      NAME OF REPORTING PERSONS
       S.S. OR IRS IDENTIFICATION NO. OF ABOVE PERSONS

       Arnhold and S. Bleichroeder, Inc.
       Arnhold and S. Bleichroeder Advisers, Inc.
- --------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*    (a)  **__

                                                            (b)  ___
- --------------------------------------------------------------------------------
3      SEC USE ONLY

- --------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION

       State of New York
- --------------------------------------------------------------------------------
                           5        SOLE VOTING POWER
NUMBER OF                           0
SHARES                 ---------------------------------------------------------
BENEFICIALLY               6        SHARED VOTING POWER
OWNED BY                            400,000
EACH                   ---------------------------------------------------------
REPORTING                  7        SOLE DISPOSITVE POWER
PERSON                              0
WITH                   ---------------------------------------------------------
                           8        SHARED DISPOSITIVE POWER
                                    400,000
- --------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       400,000
- --------------------------------------------------------------------------------
10     CHECK THE BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

       Not Applicable
- --------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

       5.21%
- --------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON*

       BD, IA
- --------------------------------------------------------------------------------
       *SEE INSTRUCTIONS BEFORE FILING




Cusip 05538E1091
Schedule 13 G (Cont.)

Item 1(a)-  Name of Issuer:  BEI Medical Systems Company, Inc.

Item 1(b)-  Address of Issuer's Principal Executive Offices:
            100 Hollister Road
            Suite 2500
            Teterboro, NJ 07608


Item 2(a)-  Name of Person Filing: Arnhold and S. Bleichroeder, Inc.
                                   Arnhold and S. Bleichroeder Advisers, Inc.

Item 2(b)-  Address of Principal Business Office:    1345 Ave. of the Americas
                                                     New York, NY 10105

Item 2(c)-  Citizenship: New York, NY, USA (Place of Incorporation)

Item 2(d)-  Title of Class of Securities:      Common Stock

Item 2(e)- Cusip Number:  05538E1091


Item 3   - This statement is being filed pursuant to Rule 13d-1(b). The person
           filing is a:
           (a) Broker or Dealer registered under Section 15 of the Act; and
           (e) Investment Adviser registered under Section 203 of the Investment
               Advisers Act of 1940.

Item 4(a)- 400,000

Item 4(b)- Percent of Class: 5.21%

Item 4(c)- Number of Shares to which A & SB has:
           (i)--sole power to vote or to direct the vote:                -0-
           (ii)-shared power to vote or to direct the vote:              400,000
           (iii)-sole power to dispose or to direct the disposition of:  -0-
           (iv)-shared power to dispose or to direct the disposition of: 400,000

Item 5   - Ownership of Five Percent or Less of a Class:

Item 6   - Ownership of More than Five percent on Behalf of Another Person:






Cusip 05538E1091
Schedule 13 G (Cont.)

Item 7-Identification and Classification of the Subsidiary Which Acquired the
       Security Being Reported on By the Parent Holding Company:
                  Not Applicable

Item 8-Identification and Classification of Members of the Group:

                  Arnhold and S. Bleichroeder, Inc., Arnhold and
                  S. Bleichroeder Advisers, Inc.

Item 9-Notice of Dissolution of Group:

                  Not Applicable

Item 10 - Certification:

            By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired in the ordinary course of
business and were not acquired for the purpose of and do not have the effect of
changing or influencing the control of the issuer of such securities and were
not acquired in connection with or as a participant in any transaction having
such purposes or effect.


                                    SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

         Date: February 11, 2000


         ARNHOLD AND S. BLEICHROEDER, INC.


         By:  ---------------------------------
              /S/ Tracy L. Saltwick
              Senior Vice President, Compliance