Replacement crank with 12" long arms

A quick learner from Minneapolis MN says:
Crank portion is 4", arm is 12". No markings found
User submitted photos of a window operator.
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Tom from SWISCO responded:
I think you should consider our 39-013 and 39-014. The arms are 13-1/2" long, but I haven't found anything that measures only 12" long. Check out each part to see how we measure the arm and double check to make sure.
A quick learner from Mounds View, MN says:
Thank you. Will remeasure and see if that will work.
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