Matthew
Touchdown! Greaser!
I love these old mechanical things.
Here's one:
http://www.oldcalculatormuseum.com/fridenstw.html
And here's the list of the rest in the museum:
http://www.oldcalculatormuseum.com/calcs.html
Here's one:
http://www.oldcalculatormuseum.com/fridenstw.html
And here's the list of the rest in the museum:
http://www.oldcalculatormuseum.com/calcs.html