Gunderson-Frindt electronic powder scale

[braindrew]

Inherited a bunch of reloading equipment from my wife's grandfather. Included in this was a gunderson-frindt electronic powder scale. Can anyone tell me more about this. Decades of sitting in the garage have taken it's toll on it, and I'm not sure if it would be worth the time and effort to clean it up and get it working. I can't find any info on the internet about these, other than some older posts on this site.