ESP32-DevkitC-V4 Header Spacing

[esp32_user]

I'm developing a PCB onto which the ESP32-DevkitC-V4 can be mounted as a "daughterboard". I need to know the spacing between the 2 headers on the ESP32-DevkitC-V4.

I looked at the PCB layout files (PDF) which show the width of the DevkitC to be 27.9mm. Using a wooden ruler on my screen and doing a quick and dirty ratio calculation, I'm 99% sure that the spacing between headers is 25.4mm.

But I'd like to be 100% sure. Can anyone please verify that the spacing between the 2 headers on the ESP32-DevkitC-V4 is indeed exactly 25.4mm?

Thanks very much!