dy or Sherry Guttery" wrote in message
.. .
Paul P wrote:


2) The full scale deflection can be calibrated by feeding the FS current
and adjusting the counter weight.

Uhhh - those counter-weights aren't for that purpose - they are there to
balance the movement regardless of position (vertical - laying down, on
it's side, etc.). They are to be adjusted so that the meter needle
doesn't move (i.e. stays on zero) regardless of the meter's physical
orientation. If you try to "calibrate" the movement with those - the meter
will become very "gravity" sensitive - and loose much accuracy - depending
on "how it sits"...

best regards...
--
randy guttery


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.

Thanks Randy for the clarification,
Paul Pinyot.