What scales to weight robot?

[J Flex 188]

wow all these high tech and alarmingly low tech but still effective scales! for the past two years we've used a bathroom scale from a mentor's house, and usually we try to find a balance point on the robot so we can weigh it without it touching the ground. failing that, we have someone hold the robot while standing on the scale and we weigh it that way. naturally this is just for a rough estimate and whenever we can we take it to be weighed, i believe we've used vet scales in the past before. course all the scales in the world wont help you if you're 135lb two nights or a night before ship