Nasal root breadth

Today's WSJ contains a great feature on respiratory masks and related safety equipment, reporting that the advent of women and others not of the Caucasian male persuasion in certain trades and activities means that old equipment, apparently fitted on members of the USAF once upon a time, no longer serves. "Nasal root breadth," along with "nasal protrusion" measurements, apparently have long been used in physical anthropology, among other contexts (anthropometrics). I even found a link to the NIOSH study. I love the summary of methodology and results.