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the levers operate the signals, points/crossings (switches) andin some cases level crsooings as well. Thus they are painted. There is a nice picture of PAR box on the frame which illustrates what I mean: Right at the top of the picture (i.e. above the frame) there is the station diagram. This is basically a map to show the lines, track circuits, points and signals. As well as other operating items like level crossings, token/ staff machines etc etc. On the second row there are a variety of instruments. Some of these are repeaters, to give the signaller an indication of what signals are currently showing on the ground. This is of course useful if you cant see them. The rectangular boxes are the Block Instruments which the signaller uses to indicate whether the line is clear etc. when being offered the train. Next to it is the bell, from whence you get the call attention etc (I told you that this is the height of technology!). The Instruments are co-acting. I.E. There will be one instrument for Lostwithiel here and one bell. The UP (i.e. London) Line (to Lostwithiel) will be controlled by Lostwithiel as Par is basically asking permission to pass the train on. So when the signaller in Lostwithiel turns the block to Line Clear this will be repeated in that block instrument. However when the signaller at Par is asked for a line clear FROM Lostwithiel (the Down), he will turn the handle on the instrument which will co-act in Lostwithiel's block instrument. Right below that is the lever frame. See the row of plungers above the levers? This is the interlocking for the frame. IF you want to pull the lever you have to pu***he plunger. It acts as another line of safety, as if you try and pull the wrong lever in a particular sequence then you could end up with a sore wrist. I will come onto sequences again in a minute. Ok below are the levers. The lever painted Yellow is a distant signal lever, the ones painted red are the Stop or Controlled signal levers, the ones painted blue are for mechanised points (or facing point locks), the ones painted black are for non mechanised points and white are spare/ not used. On the levers are white markers, these are reminders of whatever other levers have to be pulled to set a route/ sequence. Ironically at the end of the box you can see the "Par Panel". This was put in the 1980's when Burngullow was shut and they singalled the line between Par and Probus and replaced the semaphores with lights, controlled by an axle counter system from par. There are no headcode berths on here as it is a mini panel and once the trains leave that panel and enter the track diagram there is no system for allowing this technology. It is basically a series of lights in the diagram which are circuited to each track circuit. The switches at the bottom end of the panel operate the points/ signals on that section of track.
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