Our new (to us) home has several 1997-vintage windows with inoperable casement cranks. Research indicates that the window manufacturer (CraftLine) went out of business several years ago, but maybe SwisCo OEM'd the parts for them?
I hope the attached photos are sufficient to identify the needed replacements.
Tom
![User submitted photos of a window operator.](/images/pictures/2018/03/124642.jpg)