Latch lock for scaffolding hatch

This is a replacement part for a simple lock used to keep scaffolding hatch closed.
Photo number 7 shows the broken lock to be replaced (photo number 8 shows a modern metallic lock).
Lock is not a direct replacement for any existing lock, finger hole is not aligned with existing locks. This is because I had to also replace the hatch plywood, and thus was free to decide the finger hole location.