{
  "title": "Plastic film and sheet data for AI thickness-map review",
  "source_page": "https://fiund.com/industries/plastic-sheet-thickness-position-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "A roll average hides one mapped sample",
    "context": "A paper roll map and invented lab readings support a position-level comparison.",
    "records": [
      [
        "1",
        "Roll map",
        "Sample A taken 15 mm from left edge; sample B from centerline."
      ],
      [
        "2",
        "Lab table",
        "A: 0.46 mm; B: 0.54 mm, same method."
      ],
      [
        "3",
        "Review note",
        "Report edge and center individually; no limit supplied."
      ]
    ],
    "question": "What should appear in a roll profile?",
    "answer": "Plot 0.46 mm at A's 15 mm edge offset and 0.54 mm at the centerline for B using records 1 and 2. The 0.50 mm pair average would lose the positional difference. Record 3 does not support a passing or failing grade.",
    "failureModes": [
      "Replacing position-level values with a mean",
      "Reading image-left as the named roll edge after a flip"
    ],
    "fields": [
      [
        "cross_web_offset",
        "Locates each coupon"
      ],
      [
        "edge_reference",
        "Preserves side through rotation"
      ],
      [
        "measurement_method",
        "Keeps values on a comparable basis"
      ]
    ],
    "holdout": "Add a mirrored sample map and require orienting its labeled roll edge before interpreting the offset.",
    "boundary": "No real extrusion settings, tolerances, customer rolls or release decisions."
  }
}