# Definition:Imperial/Length/Mil

## Definition

The mil is an imperial unit of length.

 $\displaystyle$  $\displaystyle 1$ mil $\displaystyle$ $=$ $\displaystyle \dfrac 1 {1000}$ inch $\displaystyle$ $=$ $\displaystyle 25 \cdotp 4$ microns $\displaystyle$ $=$ $\displaystyle 0 \cdotp 0254$ millimetres $\displaystyle$ $=$ $\displaystyle 2 \cdotp 54 \times 10^{-5}$ metres

## Also known as

A mil is also known as a thou (as in thousandth of an inch).