Hello Ajax, I owned and used a Gunderson electric balance nearly 40 years ago. They were pretty much made one at a time. Basically it was a Rube Goldberg contraption that worked pretty well. Worked on a balance beam with electric contact points. Unit was about size of bread box and weighed charge dumped out of bottom into case. Wasn't as fast as current electric chargers like the RCBS Charge Master, but faster than individual weighing by hand. Everyone I knew who owned one, including myself, were high power competition shooters, and mostly used the Gunderson for loading 1000 yard ammo. As I remember, Gunderson lived in southern Ca. and made his living doing something else.
