Replacement locks

Hello, Jurgen. The 38-095 won't work for you since the fork extends too far from the bottom lip of the housing. Can you confirm that dimension? It's very important.

Yes, that's right. That's only about 1-7/16", which falls short of the 1-5/8" we show in our diagram. I'd like you to double check that you aren't just measuring the size of the fork; you also need to include that lip in the housing.

Taking another look at your casement lock, I believe you have an older style Roto brand lock. Take a look at the 38-139 to see if this matches up closer to yours. The fork projection on this is 1-1/2". It's still a little big but might be our best bet.

Alternate view of 38-139

The 39-139 can work for either the left or right hand side interchangeably. 

We probably have a good match for that operator, too, but in order to identify it we would need to see it out of the window. That way we can see the whole mechanism. Like the lock, there is more to it behind the window frame.