doubleh
Member
I'm using a digital Starret Caliper I got in waaay back 1992 for motorcycle mechanics. Has a data port so you can record measurements too. Never used that though. I was thinking of retiring it and getting a new one, but it's still accurate..
I keep the one honest with the other.
How do you know that both haven't drifted and you are checking an inaccurate scale with another inaccurate scale? Check weights don't drift. Like has already been posted, gravity is constant. My limited experience with digital scales says electronics aren't and that is why my experience with them is limited as I can't trust them not to drift.