Visualising a Production line

Is there a nice way to visualise stations on a manufacturing line.

I've created a London tube status type idea for all the zones in the factory using the ui-gauge (tile), but I'd like to show a visual representation of the stations within each zone.
I could use ui-gauge for each station but what ui element can I use to connect them. Also I'd like to be able to change the shape of the tile gauge to a circle for example
Any ideas on how I might approach this?