Due SPI header location

Hardware Arduino Due
1

I'm trying to design a shield for the Due that will connect directly to the SPI header pins. Does anyone know their exact location (in mm)?

I tried getting it from the Eagle files, but the properties of the header lists the "position" as 2555 x 1100, which I'm not sure how to interpret.

2

That position is the center of the 2x3 header in mil from the 0,0 location of the board (lower left).