One Hickok M-1 Vacuum Tube Tester. This is quite a rare unit, especially consideringthe good condition!
Based upon the color of the tag, it was likely made for the US Navy or Coast Guard, but there seems to be a lack of information about this unitdue toits rarity.

This unit is physically/electricallysimilar tothe TV-10 & TV-3 (but does not have a VOM meter built in).
The installed roll chart is labeled (at the end) as \"TV-3A/U TV-3B/U TV-3C/U TV-10A/U TV-10B/U TUBE TESTERS\".

I have inspected & calibrated the tester:
1. The sockets are tight and in good condition
2. The unit is calibrated to withinmanual tolerances
3. Both rectifier tubes have been replaced withstrong tubes
4. Switches and buttons are tight and fully functional
5. Original cord was rotten - it was replaced with a quality 3-prong grounded cord
6. The original plate/grid connector wires were rewired with fresh Belden test lead wire and new alligator clips
7. When adjusting the line or testing a tube, the meter indicator falls just above zero unless you tap it.
8. Otherwise, the meter gives accurate results.

I have also included a quality printout of the test data for the TV-3 containing the most up-to-date test data information at no extra charge.Enjoy!

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