Up for sale here is this stacked switch from a Hickok 533 tube tester, part 19912-204. This is in good condition and is guaranteed to work, though it may need cleaning and lubrication. It is the switch for filament, grid, plate, and screen--the row of five switches in a row. This works on the 533 and 533A, as well as the 600/600A, and may work on other models as well. Please make sure this is the right part for you. This may have a little writing on the shaft, but it won't be visible once this is installed, and will clean off easily. Please see my pictures for details.

US shipping and handling is $5, and international is $18. If you have any questions, please ask.

I have more Hickok parts and other vintage electronics listed--feel free to take a look!