On Mon, 13 Apr 2009 21:54:51 GMT, "att" put finger to
keyboard and composed:

Every galvanometer I've seen in the past 60 years read in microamps

The OP's measurements suggest that the meter's fsd is +/- 600uA, not
+/- 30uA. Therefore it probably has a current shunt.

- Franc Zabkar
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