My Grandmother used this same Pyrex measuring cup. Well, not exactly. Her's didn't have the newer type of handle which makes them stack together sooooo nice! I've never had one to break or it's logic board go out, it's hard drive to crash or it's transmission to bring all forward movement to a screaming halt in the middle of no-where!! These cups always give me accurate measurments and total reliability. As a matter of fact, I think they may be one of the most trouble-free things I own. Perhaps I should have bought a few more of them to scatter around the house just to remind me of how life used to be and can be again!!!!!