⚡️🦾➡️

#electrical actuation #power-up #activate mechanism #robotic arm #hydraulics #pneumatics #make move

💨🔧🦾

#pneumatics #air tool #compressed air #actuator #pneumatic cylinder #air powered

💨🚫🔔

#air pump #vacuum experiment #bell jar #pneumatics #gas properties #boyle experiment

💨♨️🌬️

#gaseous state #pneumatics

📜🎶⚙️

#player organ #music roll #automated instrument #orchestrion #photoplayer #nickelodeon piano #pneumatics