handle for casement window

A quick learner from new Jersey says:
I am looking for the correct handle for my casement window. The height of the operator from the middle of the gear bore to the bottom seems to be 2 inches, and from the tip of the handle to the end is 3 inches. The opening in the back seems to be 1/2 inch diameter. There are 12 teeth on the actual gear inside.

Thank you for your help!
Shoshana C
Customer image of their crank handle.
Profile picture of Donna
Donna from SWISCO responded:
Looking a t the operator it is most likely an 11/32" spline. SWISCO product code 39-205, is a folding handle with this gear bore size.
A quick learner from nj says:
I don't believe I have more than 2 inches to maneuver the handle - does that make sense?
Profile picture of Donna
Donna from SWISCO responded:
You could go with a "T" handle, but it might be difficult to grip and open the window.
A quick learner from nj says:
Just wondering - how do you determine the measurement of the spline? I wanted to know because there are different prices for the different spline sizes.
A quick learner says:
the operator says Truth on it. Also, the handle that I have doesn't have those two extra rectangular openings on the side of the circular opening. I placed an order, because I thought it was 11/32, as you said, but now I'm not sure. Please refer to the above photograph of the opening of the handle to let me know what you think.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
If you are referring to the operator in the photo, it is a truth operator. Look at our part 39-114L. Your shorter handle in white is no longer available. The #39-114L is the newer style. We also carry the folding handle #39-205. This will also fit Truth operators.
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