Casement window Operator

A home owner from Bethpage, NY says:
September 28, 2020
please advise as to which part this is
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Bob from SWISCO responded:
October 2, 2020

See if our 39-187 matches up. Look over all the dimensions and the shape of the gear arm, and let me know what you think. 
Sash Dyad Crank, 5"
Sash Dyad Crank, 5"
39-187
$37.10
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