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.
Fiber length ranges from 0.8 inch for cheap cashmere to up to 2.5 inches for the most luxurious. The diameter of the fiber must be less than 19 microns to be considered cashmere. In comparison, human hair has a diameter of 75 microns. Finer cashmere (often around 14 microns) is what's going into luxury garments.