Better casement windows purchased in 2003

A home owner from Lake Charles, LA says:
I need the bottom opening parts for both right & left opening windows. I can make out the word Truth and the number 31850. Another number looks like 90002 or 93002.
I also need a replacement handle for a lock, which is on the right side of the windows.
Thank you!
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Tom from SWISCO responded:

Start by comparing your operator to the 39-315 and 39-316.

For the lock, it's hard to tell, but it might be something similar to the 38-095 or the 38-096?

A home owner from Lake Charles, LA says:
What is the bottom cross bar part?
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Tom from SWISCO responded:

It looks like it is the bottom part of a hinge set, similar to our 36-048

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