There is an argument that every
ecig user should own a cheap multimeter as it makes it much easier to diagnose problems - or avoid them in the first place.
I totally agree. If any suppliers are paying attention here, they would source or design a combination ohm AND volt meter with a 510 connection just like the voltage-only displays that have become so popular. They'd have a sale with me

Keeping a multimeter with a small "
vaping junk" pouch in the car or at work is probably not an option, but a small ohm/volt display would have a place I think.Everybody who vapes, modder or not, should check their atty for shorts or unusual resistance. It's a bit foolish to only check one part of the equation, the voltage, without knowing what's happening on the other end.