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Tested 900 and 875 µmhos respectively on a Hickok 752A where minimum is 500 ..
$144.95 USD
Tested 800 and 900 µmhos respectively on a Hickok 752A where minimum is 500 ..
$144.99 USD
NOS brown base vacuum tube with black plate made by SylvaniaTested 750 on Hickok 752A, where minimum..
$69.99 USD
Tested 375/400 on Hickok 752A where minimum is 200. The 752A is noted for giving a low reading ..
$19.99 USD
Tested using Hickok 752A ..
$19.99 USD
These are closely matched NOS vacuum tubes. Tested 725/750 min 500and 625//725 min 475 µmhos respect..
$9.99 USD
Tested NOS and balanced at 3400/3400 on Hickok 752A. Minimum is 1600/1600 Sylvania Internationa..
$59.99 USD
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