XIAO Exact hole spacing

Hi Guys,

Looking for exact hole spacing or preferable a KiCad footprint for the Xiao with through-holes. I’m mounting the board on header pins, but have been unable for the life of me to find the exact pin spacing so I can drill the board. The pins are 2.54mm (1/10"), but I cannot find a center-to-center distance in the other dimension. Offhand (from MS paint screenshot measurements) id say it’s probably 0.5" or perhaps 0.4" but can’t verify this. The official libraries all have ovular footprints without drilled holes.

Can anyone help me out?

Thanks,
Thomas

The pins are in standard 0.1" raster. Also between the two rows (6*0.1")

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