Because we can't draw things in nanometers.
Chat with our AI personalities
You measure a house fly in millimeters
a scale factor of 4.5 is your answer
Millimeter wavelengths are short frequency radio waves astronomers use because they can see gases and other phenomena not visible in visible light. MM wavelengths are usually used where the air is dry so water vapor can't scatter the waves.
to play
you use it on move tutors to teach your Pokemon moves