You may be thinking of a multimeter/multitester (the electrician's tool that measures anything)? But then there are also specialized ohm meters that are just for testing atomizers. They both work, but personally I just use the resistance checker on my VW mod.
I've been keeping an eye on the 2nd one there but they are always out of stock. *pouts*
And I don't have a PV that I can use. Had to choose between an MVP and a Vamo. Went with the MVP. *shrugs* Ah well, I guess I could pick up one of those super cheap ones and get another later.