Thorn window cranks

A quick learner from Steubenville Oh says:
No numbers appears to be an 8-9" arm. I'm not sure where you measure from.
Thumbnail of the uploaded file named 2C4FDAA6-1C21-43D7-8B3F-951422C79478.jpeg
Thumbnail of the uploaded file named DF0EA453-B384-43EF-A075-F18BD2EAB5D5.jpeg
Thumbnail of the uploaded file named 312F10CA-4241-42FB-9963-1D546CC558D4.jpeg
Thumbnail of the uploaded file named 2CB31185-5D03-4810-B624-13916C5A9499.jpeg
Thumbnail of the uploaded file named 1873EDE2-E747-4C59-B755-BAB884D08B7B.jpeg
Profile picture of Tom
Tom from SWISCO responded:

This is one old operator. I don't think they've made these in decades. Of all the operators in our catalog, our best bet is probably going to be the 39-001 and 39-002. Yours is old enough that I can't be 100% sure they'll work, though. Look them over and see what you think.

Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 4-7 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at 856-317-6263 or at