replacement casement operator

A quick learner from Palo Alto, CA says:
I have a broken "Entry Card Truth" operator. The base plate is 5" long and marked 40471 The bent arm is marked 30824R and the short arm is marked 20810. The long arm is about 9".
Cover and handle are white.
User submitted image of their window hardware.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting! Check out our 39-031 and 39-032. These look to match pretty well.
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