This diagram with a piece of duct tape on it relates to something you’ve seen before, but probably won’t see again.
What is it?
UPDATE: A few of you got this right. This was taped to the floor in the metro where an old transfer machine used to stand. The machines have recently been removed entirely and the only place you’re likely to see them now is the turnstile graveyard.
Farewell, transfer dispenser
Taken with your inspector gadget spy camera perhaps? Did you intend to show an out-of-focus picture?
Water meter diagram?
How about the machine that produces or reads bus transfers for the STM?
It’s the circuit diagram for the old paper transfer strip printers in the metro.
The drive-by-wire system of STM’s metro cars?
I have a hunch it’s transit related. So I’m going to say it’s the electrical workings of a bus rollsign.
Perhaps it’s a diagram of some of the wiring of those transfer-dispensing machines which were used in the métro until the Opus card took over?
The motor controller circuit for the Metro trains (and somewhat responsible for the familiar “tune” the motors play as they cycle through the different modulations for power control).
Paul
Ain’t that the electromechanic device making the famous Du-du-du three«chords sound of the Metro?
another victory in the STM’s war against individual tickets.
I don’t get it, Bobby. Individual tickets are just as easily purchased and used as before, and it’s even more convenient because they serve as their own transfer. In fact, removing those machines makes it *easier* to transfer using single tickets: you don’t need to remember to pass by one of the transfer machines.
So, what war on individual tickets?
I miss the old fare system. Opus blows.
The duct taped one is an electrical wiring diagram, I remember making those 25 years ago for process piping plants. Similar to a P&ID. http://en.wikipedia.org/wiki/P&ID
Actually, there are (were, as of Sunday) still two of the old transfer machines at Beaudry station. I presume that they aren’t operational, but they haven’t been disassembled.
The duct taped one is an electrical wiring diagram, I remember making those 25 years ago for process piping plants. Similar to a P&ID. http://en.wikipedia.org/wiki/P&ID