I like how these old control panels often lay out the switches and gauges on a schematic representation of the physical system. Makes it easier to visualize the

I like how these old control panels often lay out the switches and gauges on a schematic representation of the physical system. Makes it easier to visualize the electrical or fluid flows that are being controlled and monitored, and helps the operators think about which valves or switches need to be opened or closed to change the state of the system.