part from an old aluminium window

A home owner from Clearwater FL 33756 says:
February 28, 2017
the part is on the side from the glass-window-frame and hold the window up or down, if you use the handle.

Sorry for my bad english i'm from Germany
handle
Profile picture of Tom
Tom from SWISCO responded:
March 7, 2017
This looks like our 39-537. Check it out and tell me what you think.
Lock Assembly Pair
Lock Assembly Pair
39-537
$10.08
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