Casement window operators

A home owner from Wisconsin says:
March 9, 2021
Hello iam looking to replace this broken window operators, I would need 2 left and 2 rights. They have truth stamped on them and 31850. Thanks for helping me find the right ones.
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Bob from SWISCO responded:
March 10, 2021

I believe this might be our 39-315 and 39-316. Compare the dimensions to see if these operators match what you need. Let me know what you find. 
Truth Dyad Operator
Truth Dyad Operator
39-315
$24.40
Crank Handle, 11/32"
Crank Handle, 11/32"
39-114L
$4.42
Truth Dyad Operator
Truth Dyad Operator
39-316
$24.40
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