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Author Message   Sillyconguru Tinkerer Username: Sillyconguru Post Number: 48 Registered: 12-2007 Rating: N/A Votes: 0 Posted on Sunday, June 02, 2013 - 11:43 am:    IIRC; at 100ASA the meter works from 1/1000 to 1/2, so (reasonable thinking says) the contact should be insulated from the resistor at 1" and B.