[YAK] Pneunatic logic circuitry

  And more beautiful pieces of ultra precision machinery you
will never see. 

It’s sad that so much “product improvement” effort is expended
figuring out ways to make product costs lower by reducing
quality to the “barely good enough” level.

I worked for Taylor Instrument Company in Rochester. In the
lobby there is a beautifully crafted brass recording thermometer,
run by clockwork and pneumatics. It was installed in 1918 and has
had no maintenance except for changing the chart paper weekly.
It’s still within specifications.