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R. N. Dent has written:
'Principles of pneumatic architecture'
erm....
Pneumatic Drill
Pneumatic Cylinder
Pneumatic Actuator
Pneumatic Switch
Pneumatic Nailgun
Pneumatic Air gun
Pneumatic Launcher
Bit more than four, but now you can choose, hope this helps,
Car tyres, balloons, whoopee cushions.
Pneumatic jacks. Pneumatic clamp. Pneumatic drills. Pneumatic door. Pneumatic wrench.
Pneumatic - as in pneumatic drill or pneumatic cannon is the correct spelling
What is the Pneumatic Railway