[Biff]

This year we used a small digital 30lb postage scale, spread sheet, and a digital bathroom scale. As complete assemblies were built and lightened, we weighed them and removed the individual items from the quantities part of the spread sheet. The spread sheet also served as our cost accounting for inspection. Entering down real costs (used items) and book cost (what it would cost if new). We recored all weights in ounces, and in ounces per linear or square foot.
Our robot was a flop down so it was pretty easy to stand it up on a small board on the bathroom scale. As shipped I figured we were a few pounds over and the scale at Buckeye confirmed this. We wound up taking our arm with the window motor and grabber off and going with a lighter and simpler tee bar and single part last arm. Due to issues with not getting a space to build early in the season and taking longer to get parts designed and built, We spent almost all of Thursday finishing, Just to break several sets of shear pins in our lowest transmission in the last practice match.
In past years we have used the wrestlers scale. We had a Doh moment when we figured out we could bring the scale to the shop instead of dragging the robot upstairs to the wrestlers locker room.