Searching for Edgemont window sash lock

We may be able to replace this lock, but I'm not sure what to recommend. I'm not familiar with the Edgemont brand. Would you be able to confirm the hole spacing, center-to-center? That will determine the best replacement option. Knowing the hole offset would also be a huge help. That would be the distance between the hole centers and the back edge of the lock.

In the meantime, look at our 90-161, 90-305, or 90-077A. These are similar in design to yours and may be a good place to start.