An odd one...
We have a set of kitchen scales, purloined from ebay a couple of years ago; similar to (but not the same as) this:
We use it set to 'grammes'; but every so often the scale changes to 'ounces' for no apparent reason. It's always done it; did it just now (hence I'm putting fingers to keyboard). But try as I might, I cannot work out any method of switching between units. There is only one switch - a push-button - which turns the unit on, and I assume that by some permutation of presses/delays this is supposed to toggle between units. I've tried every combo I can think of, but nothing works!
The only solution is to remove the battery for a decent period, and usually (but not always) that sends it back to a default 'grammes' display. It's irritating as it requires a tool to get it out.
Anyone got something similar? Any clever ideas? Maybe it's just faulty?