window crank

A quick learner from Tinley park il says:
We have lived in our house for 27 years and the bay window was installed a few years prior to moving in. There is the name TRUTH on the base of the window crank.
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Bob from SWISCO responded:

Thanks for writing in. I believe you might have an older version of our 39-035 Dyad Operator. Look over the dimensions and see if you think this would be a good replacement. 

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