Looking for sash locks Atrium Windows

Can you confirm the hole spacing on your lock? We don't have anything in this size at 1-7/8". Are you sure it's not 2-1/16"? Just eyeballing your picture, it looks like the keeper and lock have the same hole spacing, but the keeper hole distance is a lot bigger. Make sure to measure from the center of each hole, not their edges. 

In the meantime, you can see our entire selection here. There's a good chance you can find a good match.