Need Awning operator help

A home owner from USA says:
I need to replace multiple pieces of this hardware. I cannot find any markings on it. The body of the piece itself is 4.5" x 2.125", not including the mounting screws.
The window is a multiple lite awning window. The tan colored hardware is a replacement for pieces that were already broken before I bought the home.

I cannot take additional measurements at this time as the windows are on another home about 130 miles from me. If you find what you believe is the right replacement hardware I am thinking I should purchase one and try it. Ultimately I need 4 for a left side mount. Thanks.
User submitted photos of a window operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
I'm not sure what to recommend based on your information. A very important detail is the link arm, which is obscured in your photos. I've made a list of possible replacement parts on the right side of this page that may be worth considering. The body style and dimensions seem to match the two operators you show, so you just need to see which link arms are a better fit.
A quick learner from Downers Grove IL says:
Thank you for the response. Now that I see the options you have sent to me I better understand the additional info needed. I hope I can get the dimension on the link arm this weekend.
A quick learner from Downers Grove IL says:
I have additional information and dimensions to share regarding these devices.

The link Is a straight pieces, no bend or offset and the dimension in the arm screw to screw is 2-11/16 inches

The total dimension from the center of the top mounting screw to the center of the bottom mounting screws is 5-1/4 inches

The bolt hole diameter is 3/8"

I hope this is enough information for you to recommend a replacement hardware device.

Thank you
Profile picture of Paul
Paul from SWISCO responded:
Thank you for your patience in this matter. Based on your photos and dimensions, the one operator with two top holes would be the 39-075 and the single top hole would be the 39-277, which you chose. I think those could work. The distance between the top hole and bottom hole is closer to 5-1/4" than 5-1/8".
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