Nest Hello mounting plate

I have a 100 year-old house and the doorbell was mounted to an old and small electrical box. When I got a [Nest Hello](https://nest.com/doorbell/nest-hello/overview/) doorbell I couldn't mount it in the same place because it wouldn't cover the electrical box. So I made this mounting plate that 1) has screw holes aligned with the existing electrical box, 2) has screw holes that match the Nest Hello's mounting holes to mount the doorbell and 3) is big enough to cover the existing electrical box an