A millimetre American spelling: millimeter, symbol mm is one thousandth of a metre, which is the International System of Units SI base unit of length. The millimetre is part of a metric system. A corresponding unit of area is the square millimetre and a corresponding unit of volume is the cubic millimetre.
You can find metric conversion tables for SI units, as well as English units, currency, and other data. One mil is equal to one thousandth of an inch, or 10 -3 inches.
It is used to describe lengths that are relatively small, like the widths of pipes, cables or connectors. The well known terms 8mm, 16mm and 32mm describe common widths of motion picture films. To understand the approximate size of one millimeter, see this tiny red line:. And this line should be approximately five millimeters long:. The term "mil" is not an abbreviation but a unit of measure. The chart below gives you an idea of mils to millimeters to inches.
An every day trash bag ranges between 1. A much stronger trash bag that offers better tear resistance is between 3 mils and 6 mils. A credit card is around 30 mils thick while a common deck of playing cards including the box is approximately.
A digital micrometer can assess the thickness of various types of plastic sheeting. If the plastic is measured over the scrim, them it will be thicker than if it is measured where there isn't any scrim.
The scrim gives the plastic much more strength when it comes to tear and puncture resistance.
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