1 Types of Gutters and How to Prepare for an Install. 2  Advice on Gutters and Downspouts. 3  Tips for Cleaning and Repairing Gutters.  Outdoor Spring Maintenance Tips.
One mil is 1/000th of an inch. A sheet of paper is 4/1000ths of an inch thick, so 10 mil has the thickness of 2 1/2 sheets of paper. A mil is not to be confused with a millimeter(mm). On average human hair is 100 microns or .004 inches. 10 mil is the width of about 2 and a half human hairs.
The most oft-quoted average rate of human hair growth is 6 inches (15 centimeters) per year. However, the majority of studies measuring the rate of hair growth didn't take into account the race of study participants. 2005 study in the International Journal of Dermatology also found a difference among races in the rate of hair growth. For example, Asian hair grows the fastest, while African hair grows the slowest. The average hair growth rate of Asian female participants was nearly 6 inches per year.