Paul P wrote:

I was hoping someone more knowledgeable would speak up! It did occur to me
that the position of the meter would be affected. It is minimal sensitive
to horizontal (in its back) and vertical operation.

What probably happed to my particular case is the cleaning process moved the
weights and I probably resorted their original position.

Is there any documentation about this topic? Some official book? Admittedly
I have not Googled the subject just yet.

Yes - my favorite reference is NavShips EIMB TM&Ps - which in civilian
language is: US Navy's Electronics Installation & Maintenance Books;
Test Methods and Practices - my particular copy was published in
January, 1964- and carries NAVSHIPS 900,000.103. Section 5: Care,
Repair and Calibration of Test Equipment, subsection 5-2d(4) covers dial
pointers, zero adjusters, etc.; and section 5-2d(6) covers balance
weight tests; 5-2e(1a-c) balance weight adjustments (various types of
meter construction); 5-2e(2) Zero Adjustment; 5-2e(3) Pivots; 5-2e(3a)
turning, lapping, etc. of pivots; 5-2e(3b) End-Play Adjustments; 5-2e(4)
care and feeding of the hairsprings; and finally: 5-2(f-k) - calibrating
meter movements of various types - including charging/discharging the
movement's magnet.

The EIMB library consists of several volumes:
900,000.1 Communications
900,000.2 Radar
900,000.3 Sonar
900,000.4 Test Equipment
900,000.5 Radiac
900,000.7 Countermeasures
900,000.100 General
900,000.101 Installation Standards
900,000.102 Electronic Circuits
900,000.103 Test Methods and Practices *
900,000.104 Reference Data *
900,000.105 RF Interference Reduction

The two marked with an asterisk I consider two of most valuable books in
my library - they are of great value to anyone with a more than casual
interest in vintage / tube electronics (IMHO).

best regards...
--
randy guttery

A Tender Tale - a page dedicated to those Ships and Crews
so vital to the United States Silent Service:
http://tendertale.com