Securities and Exchange Commission
Washington, D.C. 20549
Schedule 13G/A
Under the Securities and Exchange Act of
1934 (Amendment No. 1 )*
THERMO SENTRON INC
(Name of Issue)
COMMON
(Title of Class of Securities)
883593105
(Cusip number)
Check the following box if a fee is being
paid with this statement [ ]. (A fee is
not required only if the filing 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 13d7).
*The remainder of this cover page shall be
filled out for a reporting person's initial
filing on this form with respect to the
subject class of securities, and for any
subsequent amendment containing information
which would alter the disclosure provided in
a prior cover page.
The information required in the remainder of
this cover 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 in that
section of the Act but shall be subject to
all other provisions of the Act (however,
see the Notes).
Cusip Number:
13G/A 1. Investment Advisers, Inc.
2. Check the appropriate box if a member
of
a group:
(a) [ ] (b) [ X ]
3. SEC Use only
4. Citizenship or place of
organization:
Delaware
5. Sole voting power:0
6. Shared voting power:0
7. Sole Dispositive power:0
8. Shared dispositive power: 0
9. Aggregate amount beneficially owned by
each
reporting person: 0
10. Percent of class represented by amount in
Row 9: 0
11. Type of Person Reporting*: IA
Item 1. (a) Name of Issuer: THERMO SENTRON
INC(b) Address of Issuer's Principal
Executive Offices:
501 9TH AVE NW MINNEAPOLIS, MN
55433
Item 2. (a) Investment Advisors, Inc.
(b) 3700 First Bank Place, Box 357,
Minneapolis, MN 55440
(c) Delaware
(d) Title of Class of Securities: Common
(e) Cusip Number: 883593105
Item 3 (e) Investment Advisor registered under
Section 203 of the Investment Advisors Act of
1940.
Item 4. (a) Amount beneficially owned: 0
(b) Percent of Class: 0
(c) Number of shares as to which such person has:
(I) Sole power to vote: 0
(ii) Shared power to vote: 0
(iii)Sole power to dispose or direct
disposition of: 0
(iv) Shared power to dispose or direct
disposition of: 0
Item 5. If this statement is being filed to
report the fact that as of the date hereof
the reporting person has ceased to be the
beneficial owner of more than five percent of the
class of securities, check the following:[ X ]
Item 6.
the shares referred to in this filing are
held by various custodian banks for various
clients of Investment Advisors, Inc. None of the
individual clients or custodian banks holds more
than 5% or more of the shares.
Item 7. Not applicable.
Item 8. Not applicable.
Item 9. 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.
After reasonable inquiry and to the best of
my knowledge and belief, I certify
that the infraction set forth in this
statement is true, complete and correct.
Date: 11-7-97
/s/ Kelly Thomas Coughlin
Kelly Thomas Coughlin
Vice President
Director of Compliance
