Awning window crank

A quick learner from Ohio says:
I'm looking for a replacement part for awning windows. I've found some online, but nothing seems To have that little nob on the end where the crank connects to the window piece. Looking for someone to point me in the right direction!

These windows are old- the cottage was built in 1950- and possibly remodeled in 1970- so one of those time frames if that helps at all.

Thanks!
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Tom from SWISCO responded:

Hello! This operator is similar in design to our 39-025. I think this may be just what you need, since it also has the nub at the end of the arm (in addition to a screw), but look it over and see what you think. We also sell the 39-026 for the opposite side if you need it.

Dimensions for 39-025
Dimensions for 39-025

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