Straight arm casement operator

A quick learner from Colorado says:
Please let me know what other info you need from me to identify this window operator. Thanks for your help!
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Bob from SWISCO responded:

If it's a single straight arm operator, there's a few possibilities depending on the straight arm's length. See if our 39-014, 39-255, or 39-028E match what you need. 

39-014 : Casement Window Operator, 13-1/2
Casement Window Operator, 13-1/2" Arm
39-255 : Traditional Style Crank Operator, 7-1/2
Traditional Style Crank Operator, 7-1/2"
39-028E : Ellipse Style Single Arm Operator, 9-1/2
Ellipse Style Single Arm Operator, 9-1/2"
Anatomy of a casement window
Anatomy of a casement window
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