what is mil in thickness
Mil. The mil is a unit of measure typically used in manufacturing and engineering for describing distance tolerances with high precision or for specifying the thickness of materials. One mil is equal to one thousandth of an inch, or 10 -3 inches. The mil is also referred to as thou. The closest unit to the mil in the metric system is the micrometer: One mil is equal to 25.4 m. One millimeter, in the metric system, is equivalent to 1/1000 (one thousandth) of a meter. 1 mm = 10-3 m.