There is one 0.3 mm gun for mid range spraying, a 0.2 mm gun for precision work, and a 0.8 mm gun for spraying large areas all at one. (geekwrapped.com)
That makes precision work easier than ever, and it creates a fine mist that keeps the color even and beautiful. (geekwrapped.com)
Some day they may be able to perform medical precision work in the human body or help analyze pathogens and pollutants in mobile laboratories. (phys.org)