I do not see that 110.7 requires the use of a Megameter.
I see that it requires that circuits are free from short circuits and from grounds.
That can easily be determined without a mega.
Maybe this is just a local thing for Pete and I but I have been doing this a while in many different types of electrical construction and very few electricians or ECs own a Mega.
The company I work for now has quite a few, some that interface with a lap top to give very detailed reports.
This is used when the job specifications require it, or if we have to verify damaged wiring.
