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Try to get the model number on the Heathkit, some Heathkits were basic emissions testers (but still recommended if you cant afford a Hickok, easy to restore) and some were true Mutual Conductance testers similar to Hickok.
I found my Hickok in an antique store cheap, it was a bit beat up looking. They had a nice looking but basic emission tester next to it for 3 times the price...
Last edited by Olorin67; 09-22-2015 at 11:36 PM.
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