[Amps] Bird wattmeter

Steve Thompson g8gsq at eltac.co.uk
Mon May 7 06:46:02 EDT 2007

I think the 1350 ohms Peter measured is the movement itself - the spec. 
is 1400 ohms, 30uA. I don't think there's any extra resistors in there.

I forget who started the thread, but how far off fsd is the indication 
at 30uA?

Could it be worn or dirty pivots or work hardening in the hairsprings? 
Maybe some sort of damage from being pinned against the end stop too 
often :-)


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