Window pivot for wooden double pane windows

A quick learner from Rhode Island, USA says:
Unable to find any brand or identification information on the windows. Broken Pivots are marked with L or R only.
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Casey from SWISCO responded:

Hello,

Take a look at our 26-150 pivot pair and see if the dimensions and hole placement could work for your window. Thanks for posting! 

A quick learner from Texas says:
I have substituted the Swisco 26-150 for ~1995 Weather Shield pivot pairs. It seems to work. You do need to slightly move the Swisco downwards on the wood sash to have the zinc triangle in roughly the same position as the OEM part. I used the lower of the existing screw holes in the sash for the Swisco upper screw hole and then used a 15 gauge panel nail through the Swisco triangle opening.

The photo shows the old WS pivot part with the new Swisco pivot part.
Thumbnail of the uploaded file named WS_pivot_pair.jpg
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