> “From the tank a series of high-pressure pipes snake off toward every corner of the factory. A hard rubber flexible hose connects each tool to a pipe. The entire shop runs on compressed air. Every piece of machine is running on pneumatic power.”

This was an entirely normal setup for factories and workshops back in the day, certainly not exclusive to the Amish!

Now days, electric tools have become more powerful and more convenient thanks to better batteries etc, so pneumatic isn’t as common as it once was. But pneumatic tools of all kinds are still sold and still used in some shops.