A technician tests the pivoting motion of air cylinders that will generate linear motion of four axes. The elbow fittings mounted to each cylinder speed installation because tubing can be connected simply by pushing it into each fitting.
Halloween has become big business. Candy and other treats and simple costumes are still a big part of the festivities, but masks and costumes have become more detailed, realistic, and gory. You can even buy animated figures that use motion to bring ghouls, zombies, and monsters to life.
Entry-level animated figures use a few axes of motion using electromechanical drives. But the pros make figures with multiple movements, and in many cases, there just isn't enough room for big and heavy electromechanical drives.
Enter pneumatics, where a compressor can but tucked away out of sight (and earshot), and pneumatic cylinders and rotary actuators generate motion from within cramped quarters.