scales

What is the best way to weigh my guinea pigs? Should I buy one of those pet scales? Currently the only scale that I have in my house is meant for humans, and not super accurate. Should I use it?

my current scales for weighing my pigs are a set of really cheap analogue ones. It's difficult to get the pigs balanced on top (inside a cosy) and I'm not sure they're even accurate. I'd really like some digital ones with a bowl big enough for the piggies to sit in. Does anyone have any that...