Cheryl ...
Hot Probe (Red) to the center hole of the atomizer (flipped upside down) And put the Grounding Probe to the threads ... = You should get your readings!!!
Brian, were those old atty's from me? I ask, because those are RN4072 atty's, not 801 atty's ... I tested a handful of new 801 atty's and never saw over 3.5 ... Most were in the 3.2-3.3 ohms range ...
I tested a series of 5 different kinds... Here were my results:
4072 Average - 3.7 ohms
801 Average - 3.3 ohms
901 Average - 3.1 ohms
510 Average - 2.9 ohms
401 Average - 2.5 ohms
Two were the old 4 hole style I've had for close to a year. The rest were bought about 4 months ago. They must be the RN4072 atomizers as they tend to be 3.7 ohms or higher. Sounds like I need to order some new ones when my stash of keepers runs low
Keep in mind I didn't start this thread to complain. I used to use Janty atomizers at $20 a pop so occasional duds at $10 was never a problem. I was just looking for a way to test them as soon as I get them because I hate to remove the primer when I know I won't be using them for a few months.
Please come out with a smaller 3.7v unit soon so I can get my wife to quit analogs

Brian