Body: "Pneumatic machinery" is branch of engineering that makes use of gas or pressurized air.
Several topics in "Pneumatic machinery" include electrically powered compressor powers cylinders, air motors.
People study "Pneumatic machinery" in order to provide a simple and cost-effective means to move, clamp, rotate, grind and screw.
A few scholars of "Pneumatic machinery" include Andrew Parr, Ivan Law.