Weathervane Casement Window Parts
A home owner from Bellevue, WA says:
June 3, 2016
These are wood windows marked Weathervane.
Dave from SWISCO responded:
June 7, 2016
I believe we can help. See our 38-075 lock to start out with, this looks like it matches your old one. We should be able to replace the operator, as well, but I will have to see it removed from the window in order to identify a good match.