Will the 39-157 work with a Crestilne window?

A quick learner from Hot Springs Village, AR says:
April 18, 2013
Will the extension # 39-157 work with a "Crestline" window crank?

I am not sure where to measure the 11/32".

The handle has a #15 above the #45054 on the inside of the casting.

Thanks, Richard
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Tom from SWISCO responded:
April 18, 2013
Hey, Richard, thanks for posting. I'm not sure if the 39-157 could work with a Crestline window. I would have to see what your operator is now. Could I maybe see a few pictures? That would help give us an idea.

The spline is where you would plug the 39-157 into the operator. It's an 11/32" opening.
A quick learner from Hot Springs Village, AR says:
April 18, 2013
Tom: Here are some images.
User submitted photos of a window operator.
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Tom from SWISCO responded:
April 19, 2013
Thanks for getting back to us, Richard. That operator looks like it could be compatible, especially looking at the handle. The 39-157 is definitely a good place to start, but without knowing the size of the bore that the 38-157 would be attaching to, I can't say with any certainty. What is the size of the opening for that handle? Is it also 11/32"?
4" Crank Extension, 11/32"
4" Crank Extension, 11/32"
39-157
$25.59
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