Jordan wrote in news:kfDgn.9300$pv.2138@news-
server.bigpond.net.au:

My cheap electronic calipers have started playing up. If I move it too
quickly, it reads wrong. If moved slowly it seems OK, but that's not
very reassuring. Are these things total junk to be avoided, or just I
got a bad'un? New battery didn't help.

Try cleaning the face of the scale that the readout slides over. Even on
my good Mitutoyo, I would get that behavior after many years of grubby
finger prints built up on it. I think I used denatured alcohol.

Doug White