Hair widths to barleycorns equation
To convert hair widths to barleycorns:Multiply
the number of hair widths
by 20.81991803181877
About hair widths
A human hair's width varies between 17 and 181 micrometers. The measurement used here is 144th of an inch — around 176 micrometers — it was sometimes used with English units, but is not included in the Imperial system.