39-253L didn't work; what will?

A quick learner says:

Hi, i just purchased your 39-253L in but it doesn't look like it will fit, can you help me find one that will?

I believe is a Farley window, at least that is what all the other windows are but this is the only crank style i have.
thank you
A customer submitted photo of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting. Are you sure the 39-253L won't fit? Have you tried it out yet? It certainly looks like your existing operator, but I can't tell for certain. What are your operator's dimensions?
A quick learner says:
The dimensions all looked the same its was just the operation seemed backwards i can give it a shot an see if it will work.
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