Marvin casement window operator
A quick learner from Walnut Creek, CA says:
June 30, 2016
I have 3 broken operators. 1 is stamped 30470LH on the bottom of the long arm. It is a 2 arm operator mfgd by Truth apparently The short arm is stamped 20810. My second is the RH version of this operator. My third is missing, but the window is the same width as #1 above. So I assume I need two 30470LH's and 1 30470RH. Windows were installed in 1989. Hopefully you can find replacement operators with this info.
Paul from SWISCO responded:
July 1, 2016