This handy little tool from eLeaf can be used to check the impedance (Ohm's) of your atomizer, tank, or coils safely before installation onto your mod or device. It's also very helpful for identifying shorts, bad coils, too low resistance, or voltage issues. Many simply use it for testing the output on batteries. This is a very easy to use vape troubleshooting tool.
Powered by 2 x AA Batteries (not included), this tool has both a voltage and ohm port with universal 510 / ego testing posts. A digital LCD display can measure with +/- 0.4% accuracy: