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Old Amp Hour Meter

3118 Views 20 Replies 7 Participants Last post by  Big John
Saw this at an antique mall today. Anyone know how it worked?

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You holding out on the picture of the inside ? > ;)

I'll reckon a coil...

I bet you could find the road map for that! Ok the Patent!
Good Man

I accounted for the coil, forgot about the a\switch!

Good Stuff, Old School! Cool - Thanks
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