Please. Just stop.
Any kitchen scale will measure that. Or any postal scale (which you can use for free at the post office).
Or you can just use common sense. Wait ... never mind.
Some people need the drama, so if they don't have enough, they create some. There's other things about the FAA requirements and registration that I find disconcerting, but for some reason I never felt the need to complain about how one figures out if a drone is over .55lbs or not.
I have this rather annoying friend who is incapable of not making drama out of absolutely nothing. In the most recent exchange, he was sulking that he couldn't visit Canada because they require a passport now. Well, I'm like get a passport then. He's like, I can't get one. Sure you can. No I can't... I don't have the documents needed to qualify. Sure you do, everyone does... we are all born naked with no ID except a birth certificate, yet somehow we manage. No, I can't.... they need a driver's license and I don't drive. So, get a state-issued ID that looks like just a driver's license. No, can't do that, I'd have to get birth certificate. Well, get one, Einstein. But I don't know what town I was born in and I don't want to ask Mom. And... this absurd exchange went on for a while and he remained unconvinced it was possible to get a passport. Self-created drama... some people live for it.
Anyway... what was this topic about again?
Oh right... I did register yesterday, but not happily, and my doing so is not to be taken as an endorsement for force-based government solutions to problems I would prefer we find peaceful voluntary ways of solving.