Who would use a plotter?

Answer 1

A plotter is a computer output device used to make drawings or maps, they are used by people who need such output.

Answer 2

Anyone really. A plotter is simply a device used to draw images from a computer. Its most common use - is in businesses such as building planners, architects, CADCAM etc. They come in various sizes from A4 to A0 paper sizes - and bigger !