Think GUI is NUI? PUI.
Train dispatchers in 1900 had an animated display to show which track sections were occupied and how the switches were set. You can see the little miniature signal flags in the top panel.
The dial-like items are train describers.
When another dispatcher needed to know what kind of train was in this section (empty, mail, private, military, etc) the dispatcher would push one of the buttons and the describer would send pulses to the receiving describer.
My version is based on one of the simpler types. More complex GUIs looked like this:
Labels: 1901, Morsenet of Things