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The front view of this AutoPiano stack clearly shows the spool box in the middle with the automatic tracking device on the left and the 5 point wind motor on the right. Also if you look closely at the front of the stack you can see all the screws that hold the various boards together.

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The back view of the same stack allows one to see the lead tubing coming from the brass tracker bar located in the spool box and terminating at the junction board just above the striking pneumatics and the striking fingers. Notice the metal linkage leading from the tracking device to the transmission which is mounted directly to the spool box on the left side in this particular picture.

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You never know what you are going to find in player piano work. Upon closer inspection it was found out that the rubber cloth used to cover the striking pneumatics had at one time been food for a family of mice. Luckily the mice ate only the cloth and left the wood alone.

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The double pneumatic automatic tracking devices is very much like the tracking devise found on the Standard player action. The difference here is that the pneumatics are oriented with the open ends of the pneumatics pointing down. The lead tubing you see leads from the tracking device and connects to the outermost two holes on both sides of the tracker bar. Notice how the two movable boards of the tracking pneumatics are connected via a connecting rod made of wood. Also the metal connection rod which runs along the back of the spool box to the transmission is visible. It is mounted to the far right board with a screw.

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With the bench inspection completed we can now go on the the second room and begin the dividing process.