![](http://lh3.ggpht.com/_f7NASewe_Wc/STi481X3UCI/AAAAAAAAAao/BrzXRGdpcdo/s800/two-hairs.jpg)
To figure this out get a nose hair and then a head hair.
Next get out your high precision digital calipers.
Then measure the two hairs. The order shouldn't matter.
![](http://lh3.ggpht.com/_f7NASewe_Wc/STi5zuOcnvI/AAAAAAAAAbI/CD1Z409bSFg/s800/digital-calipers.jpg)
If you borrowed the calipers, clean them.
Your results may vary but I got 0.13 mm for the nose hair and 0.05 mm for the head hair. That is to say nose hairs are 8.0778255 × 10-8 miles thick and head hairs are 3.10685596 × 10-8 miles thick. Which means nose hairs can be over twice as thick as head hairs.
Yes a sample size of one is statistically dubious but getting twelve was not an option.