S13 output shaft spline diameter?

[1Via!]

I have a complete set of z32 rear spindles with brakes, etc. From visually comparing the twinturbo spline against the NA spline size I think that I have NA hubs, but just to be sure, I would like to know the diameter of the spline on the S13 so i can compare it to the hubs i have.

If someone has a spare S13(or s14, or z32 NA) output shaft spline lying around or easy access to one, could you measure the spline and let me know the diameter?

If you have a sliding caliper ruler, could you use that so the measurement is as acurate as possible? If not, a ruler would work just fine.

I have searched on here and elsewhere for the size, but haven't had much luck. Thanks in advance.