Awning Window Operator

A quick learner from New Hampshire says:
I have two large awning (or maybe Jalousie) windows. They still open up, but the operators are missing (the windows were previously screwed shut). How do I determine which operator I need? The attached image looks like the window and mechanism in question.
Thank you.
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Tom from SWISCO responded:
The picture you've shown us resembles pretty much every such awning operator in our catalog. I cannot determine what you have without more information. The best way to determine what hardware you need is to remove the operator itself from the window itself and show us a few pictures of it. We will also need you to tell us detailed dimensions of the holes, gear arm, and link arm. Thank you!
A quick learner from New Hampshire says:
Unfortunately, the original operator is missing, as is the link arm. Is there a way to determine which we need without the old operator?
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Dave Sr. from SWISCO responded:
That will make things a lot more difficult. Start by showing us the window, including where the operators screws into. Include the spacing of these screw holes. Please also show us the arm of the window that the operator attaches to. Maybe with this information we can suggest something.
A quick learner from New Hampshire says:
Sorry about the lag between responses--it's been plenty warm enough to keep the windows open. Now it's getting cold and we want them closed!
I'm posting pictures of the windows, the arm of the window , and a diagram with measurements of the hole where the operator would attach inside the window. The bottom arm of the window (where I'm assuming the link arm attaches) is roughly 4 1/4" long, and the space between the hole and the nub that the closing hook grabs is 1 1/2".
Thanks so much for your assistance!
User submitted photos of window hardware.
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Dave Sr. from SWISCO responded:
Take a look at the 39-025, along with its related video. See if this is the operator you are looking for.
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