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.
Average Human Hair Diameter. The average human hair diameter is 99 um. A single um is equal to one millionth of a meter. It is also equivalent to one thousandth of a millimeter (0.001 mm). In inches, the diameter would be 0.001. In centimeters it would be 0.00254.