This project is a board hosting a couple of pogo pins intended to supply power to structures and other scale models.
The board has a diameter of 29 mm intended to be mounted in a 30 mm hole. The distance between the pogo pins is 10 mm.
You have a lot of choices regarding pogo pins, but with the default pins used in the KiCad project, the board should be mounted 6 mm under the surface used to expose the pins.

