I got into the parking meters this summer I broke my leg and had to have something to do. I bought a bunch of Duncan 50 and 60s to tinker with, thanks for the picture of the dual, never seen one, does it function?
Sorry to hear about your leg. It's gotta be hard to carry those meters around on crutches!
I got into parking meters just because I needed a hobby that wasn't computer-related since my job is in that field. I couldn't stand sitting in front of a monitor for 14+ hours a day.
As far as the Dual, I haven't tried it out yet. I just got it recently and was messing around with one of my other Duncan 60's. I'll drop some change in it tonight and let you know.