Window crank replacement

A quick learner from Greenwood Indiana says:
I need a replacement for this Truth Wright right hand crank
Thumbnail of the uploaded file named Base
Thumbnail of the uploaded file named Operator Arm
Thumbnail of the uploaded file named Operator
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Lauren from SWISCO responded:

Hello, thank you for posting,

Please start by reviewing the style of the 39-013 or 39-027E operators. Compare the dimensions of both to confirm the best fit based on the length of the arm. Let us know what you think and if you have any additional questions! 

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