I think my operator is more than 50 years old. It's about 9" from the end of the arm to the axle on the rotator.
Tom from SWISCO responded:
March 24, 2017
Hello! Please take a look at our 39-001. Please make sure your dimensions are compatible with ours. Get back to us and let us know if this is what you have been looking for.
A quick learner from Monroe Michigan says:
June 14, 2017
I live in a Lustron home a kit home from the late 40's. I'm hoping this window crank works for my application. The dimensions are the same as listed. Has anyone else used these for a metal home like this Lustron?