In 2002 we took the robot to the airport and used the luggage check-in scales, they're pretty accurate and, if you have nothing better closer to you, it's a very good option.
In 2003 we didn't weight the robot - ended up adding ballast to increase traction, a robot builder's dream
This year we only had to take a pound off the robot, despite our somewhat "ghetto" weigh in techniques...
