I'll throw my 5 cents in, and hopefully make it simpler
Wattage mode vaping:
Maybe...but really only if you're building to use on a mech, with all the possible downsides of getting your ohms wrong
Temp controlled vaping:
Don't bother, because...
Even a 0.05 resistance change (cold coil) from one reading to the next is enough to ruin a good TC vape, and I've yet to ever see an ohm meter that was actually accurate for 0.5 ohm even on a TC wire...
For both types of vaping:
Why an ohm metre doesn't matter (apart from the above wattage mode/mech mod note) is that ultimately you're not going to fire your coil on the meter, you're going to fire it on your mod, and that mod is going to sometimes have its own internal resistance anyways, and so you could get yourself into a circular loop if reading the ohms on the meter, screwing it on the mod and getting a different reading and getting fixated on something you really shouldnt...
Your mod has to fire it, so let it do the reading. Especially on temp controlled mods, like the DNA, the meter on it is orders of magnitude more accurate than any other piece of 3rd party craptastic ohm meter...
By all means screw your build on to different mods to compare, but be aware as mentioned internal resistances in mods can vary and so don't be alarmed if different mods register different ohms. If they're way different, then obviously one mod has either a different internal resistance or if way way off, can be down to a crappy 510, or firmware.
Cannot stress again the one corner of vaping you want to check your ohms is when building for a mech...you do not want to get that wrong...
For all other vaping, let the (regulated) mod do the reading...keep life simple
My other top tip for a new builder is if you have gone to steam engine coil builder is to use its suggested wraps as a guide only, don't expect to match in reality, again, the mod has to fire the coil, not a web page....so let the mod read the ohms, and if it's in the ballpark of expected, fire away....
Note: as a newb I bought an Eleaf ohm meter, the most inaccurate ohm meter ever invented, used it once, noticed my mods were more accurate and got on with life....
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