Help!

A quick learner from St.Louis says:
I live in St Louis and I'm going to my mother's in Phoenix to fix her house up so unfortunately the only thing I have is the one picture that I included and I'm hoping that you might know which crank handle I need to replace.
operator crank
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Paul from SWISCO responded:
From your photo, the outside housing looks similar to that of our 39-002 , but I can't guarantee it's a match. It would depend on the length and style of the arm. Look over our pictures and measurements for the 39-002 to see if it's a match.
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