Window crank mechanism for metal casment windows built in the 1930's

A quick learner from Pittsburgh PA says:
Renovating metal casement windows in a house built in the late 1930's. Need window crank opening and closing mechanisms.
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Casey from SWISCO responded:


Your photos remind me of our 39-001 and 39-002 operators with 9" long arms. Take a look and see how the specifications compare to yours. Thanks for posting! 

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