Window crank operator

A home owner from Hollywood Florida says:
Hi I'm looking for a replacement part for this operator. I purchased the house recently so I have no information on who made the window. It's about 4" long.
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Emily from SWISCO responded:

Hello!

We'd be happy to help but we'd like to see a photo of your operator with the window open so that the arms that move the sash are fully visible.

Thank you so much! 

A home owner from Hollywood Florida says:
This is a picture of the operator and arms.
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Emily from SWISCO responded:

Thank you for the additional pictures! This is a huge help. It looks like you have an old discontinued GU operator. These aren't made anymore but take a look at our 39-315 and 39-316 operators, along with the video below, to see if you can use these as a substitute.  

39-315 : Truth Dyad Operator
Truth Dyad Operator
39-315
$24.61
VIEW >
39-316 : Truth Dyad Operator
Truth Dyad Operator
39-316
$24.61
VIEW >
How to Replace a Discontinued GU Operator
How to Replace a Discontinued GU Operator
VIDEO
WATCH >
Anatomy of a casement window
Anatomy of a casement window
VIDEO
WATCH >
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