Convert or replace your defective Hickok original
Now available a digital meter for the 539B & C versions only
RADIOLA GUY is an authorized dealer for this fine, well made product.
It's quite easy to convert and come with easy to follow instructions. The meters fits into the original cut-outs and mounting holes for those testers using the original Bakelite meter. If your instrument has the later all plastic rectangular meter, it requires a bit more work as the cut-out hole will require enlargement.
The meters come pre-calibrated, with full installation instructions. Your tube tester must be in proper calibration and working properly for complete accuracy.
The main meter digital readout displays a percentage (0 - 100%) of the value determined by the function switch. Very simple to convert to micromhos. For example; a 50% read on range "D" = 3000 Micromhos.
For questions, don't hesitate to contact me.
If you are unsure of your Hickok's (model 539B or C version only) tester's working status, I can arrange to have it serviced & calibrated along with the meter installation, contact me for more info.
* the bias & AC meters will not work on the early 539B models that are equipped with the square meters.