Hickok 600A meter replacement.
One each Hickok 600A tube tester with a damaged meter.
One each Simpson 100 uA taut band meter movement.
Scan the original meter face and reduce 66% to fit the
new meter face.
Put a 125 ohm resistor across the meter movement and a
130 ohm resistor in series with it.
500 uA full scale and 230 Ohm series resistance total.
Presto, a working Hickok tube tester.
Jeff
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