Used as a stop on a window
A quick learner from Columbus OH says:
October 14, 2014
It's the piece that prevents a window from being opened too far. There are no markings on it and it's off a 25 year old window from the Window Factory in Columbus OH.
Tom from SWISCO responded:
October 15, 2014
Have a look at our 26-275W and see if this is a possible match.