heathkit IM-11 VTVM Vacuum Tube Volt Meter Testing

Here are some tests with my Heathkit VTVM IM11 after test and calibration

[Shnick]

I just refurbed an V-7A and an AV-3 milli. Talk about super touchy! I rebuilt an IM-11 and sold it, never should have done that. Still use an IM-17 in the plastic box. New tubes on these have to burn in for about 48 hours before calibration.

[bobbarcus]

I just got one but with a ground plug and good leads too, Now I can start using it thanks

[jp]

Super Cool.   I just bought a Heathkit  IM-18 off of Ebay.  I hope mine is as accurate as yours.

[ronshaw]

I wish I still had my IM-18 I bought new as a kit years ago. I no longer have a meter with an analog scale. I find them easier to see trends than a digital that just has numbers changing...

[lastnamefirstfirstnamelast]

Extreme amateur here. I have this heathkit and a lot of preamp tubes and vacuum tubes I want to test. I know for testing continuity but what else should I be reading from the meters when testing a tube for it to be “good for use”