Hewlett-Packard 431B Power Meter

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Hewlett Packard Catalog CostLow BidHigh Bidaverage
$450.00 (1965) ...
$129.57 (+$26 ship) 9/14/07 #130152109140 jrmeyers-miami (9 bids $9.99 start) (testing not spec'd - w/cable and 478A thermistor mount)

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    Requires external thermister mounts and connecting cable