Here in California at the UC Davis health network (a HMO) they take your
weight, er., mass, on scales with electronic options for kg or lbs, the
nurse announces it in lbs (it is always set that way), but when you
leave even a few minutes later you receive a printed page with your
weight reading, e.g., "70.643 kg (155 lbs, xxx oz)".
I asked the nurse why they take weight, sorry, mass, in pounds, and she
says, of course, "I don't know".