Trying to find a replacement window crank

A home owner from Illinois says:
June 28, 2019
I have a crank that is broken and need a new one. Please see the photos. Any help identifying a replacement part. Probably casement windows from 70s or 80s.

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Bob from SWISCO responded:
July 3, 2019

Thanks for writing in. To start, see either our 39-013 and 39-014, or our 39-027E and 39-028E. Look over both sets of straight arm operators and see if either has dimensions that match your old hardware.
Casement Window Operator, 13-1/2" Arm
Casement Window Operator, 13-1/2" Arm
39-013
$20.70
Casement Window Operator, 13-1/2" Arm
Casement Window Operator, 13-1/2" Arm
39-014
$20.70
Ellipse Style Single Arm Operator, 9-1/2"
Ellipse Style Single Arm Operator, 9-1/2"
39-027E
$20.70
Ellipse Style Single Arm Operator, 9-1/2"
Ellipse Style Single Arm Operator, 9-1/2"
39-028E
$20.70
Anatomy of a casement window
Anatomy of a casement window
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How to identify casement and awning operators
How to identify casement and awning operators
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