This fictional instrument workshop notebook has a recurring editorial notice in its main text. It is not a repair manual and supplies no instructions for working on a real instrument. The pages are owned synthetic calibration fixtures. Their case narratives use an independent topic and writing style so that a family held out from exploratory analysis is not merely another copy of a training family's story.
Two revisions of a drawing changed the position of a caption but left the illustrated model unchanged. The catalogue recorded a layout revision, avoiding the implication that the physical demonstration object had been altered.
The unused tuning chart belonged to a display about notation. It had not been completed during a session. Its empty entries were described as part of the exhibit design rather than evidence of a failed adjustment.