I repaired and calibrated this Hickok 600A Tube Tester. I installed a new 8-pin Octal and 9-pin miniature socket savers. The case has normal wear for a tube tester of this vintage. A manual and tube test data is available on this website.
The 600A has three range settings so you can test for the Mututal Conductance as well as the good/bad quality.
The Hickok 600A Tube Tester is a great choice for radio and vintage amplifier work.
The Tube Tester has been checked out and professionally calibrated. The Tube Tester is $350 plus shipping to the lower 48 states only because of the weight.
Contact Me if you have a tube tester you want calibrated.
