Crank Mechanism

A quick learner from Des Moines, IA says:
June 29, 2015
Please identify.
User submitted a photo of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
June 30, 2015
It's hard to say without seeing the whole arm. That said, our 39-027E and 39-028E may be possible matches. Carefully compare them to your own hardware to confirm.
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