Aluminum window operator

A home owner from cleveland, oh says:
no markings on existing parts. window operator for aluminum windows. Probably around 30 years old.
User submitted photos of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
Hello! I think we should be able to help. We carry a wide variety of awning window operators. Before I suggest one, could you show me a picture of this operator out of the window? I'd like to see the link and gear arms. If you can also give me the size of these arms, that would be a huge help. Thanks!
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