Micrometer (µm): The micrometer, also known as the micron, is equal to one one-millionth of a meter (0.000001 meters). It is used in scientific research, especially in fields like microscopy and nanotechnology.
Decimeter (dm): The decimeter is equal to one-tenth of a meter (0.1 meters). It is used less frequently than other metric units but can be encountered in certain applications.