{
  "1": {
    "supplier_source": "https://www.sportsandclassics.com/product/146454-triumph-tr250-tr6-spitfire-herald-midget-connecting-rod/",
    "supplier_image": "https://www.sportsandclassics.com/wp-content/uploads/2023/01/146454-Triumph-TR250-TR6-Spitfire-Herald-Midget-Connecting-Rod-scaled.jpg",
    "read_scope": "Own146454 product photo visually read: relieved shank with longitudinal edge flanges and rounded pocket ends. Second image is packaging,not reverse-face evidence. Factory Midget p58/107-B80 lists146454 rod and separate119813 bush. No fitted identification or calibrated tracing.",
    "retained_big_small_centers_native_mm": [
      [
        0,
        -181.25,
        -122.75
      ],
      [
        0,
        -35.25,
        -122.75
      ]
    ],
    "estimated_relief_y_bounds_mm": [
      -145.25,
      -55.25
    ],
    "estimated_relief_width_mm": 12.5,
    "estimated_web_thickness_mm": 4.0,
    "estimated_relief_end_radius_mm": 6.25,
    "hidden_reverse_face": "Mirrored reference hypothesis;no reverse-face photograph recovered.",
    "owner_dimensions_applied": false,
    "removed_native_volume_mm3": 13097.633664077148,
    "limits": "Shank pocket,width,depth,rounded ends and reverse-face symmetry are construction estimates from supplier topology. Existing factory-center-distance datum and all big/small bore,width,cap split,boss/fixing and installed stations stay. Retained end bore/width values come from the earlier aftermarket H-beam comparison;they are not relabeled as stock146454 or fitted dimensions. No photographed lightening/oil hole,casting mark or number is copied or assigned. No cap,bolt,small-end bush,crank,piston or engine pose changes to force a fit. No forging development,material,strength,mass balance,loaded clearance,working articulation or verified replacement/removal path."
  },
  "2": {
    "supplier_source": "https://www.sportsandclassics.com/product/146454-triumph-tr250-tr6-spitfire-herald-midget-connecting-rod/",
    "supplier_image": "https://www.sportsandclassics.com/wp-content/uploads/2023/01/146454-Triumph-TR250-TR6-Spitfire-Herald-Midget-Connecting-Rod-scaled.jpg",
    "read_scope": "Own146454 product photo visually read: relieved shank with longitudinal edge flanges and rounded pocket ends. Second image is packaging,not reverse-face evidence. Factory Midget p58/107-B80 lists146454 rod and separate119813 bush. No fitted identification or calibrated tracing.",
    "retained_big_small_centers_native_mm": [
      [
        0,
        -268.75,
        -43.25
      ],
      [
        0,
        -122.75,
        -43.25
      ]
    ],
    "estimated_relief_y_bounds_mm": [
      -232.75,
      -142.75
    ],
    "estimated_relief_width_mm": 12.5,
    "estimated_web_thickness_mm": 4.0,
    "estimated_relief_end_radius_mm": 6.25,
    "hidden_reverse_face": "Mirrored reference hypothesis;no reverse-face photograph recovered.",
    "owner_dimensions_applied": false,
    "removed_native_volume_mm3": 13097.633664142639,
    "limits": "Shank pocket,width,depth,rounded ends and reverse-face symmetry are construction estimates from supplier topology. Existing factory-center-distance datum and all big/small bore,width,cap split,boss/fixing and installed stations stay. Retained end bore/width values come from the earlier aftermarket H-beam comparison;they are not relabeled as stock146454 or fitted dimensions. No photographed lightening/oil hole,casting mark or number is copied or assigned. No cap,bolt,small-end bush,crank,piston or engine pose changes to force a fit. No forging development,material,strength,mass balance,loaded clearance,working articulation or verified replacement/removal path."
  },
  "3": {
    "supplier_source": "https://www.sportsandclassics.com/product/146454-triumph-tr250-tr6-spitfire-herald-midget-connecting-rod/",
    "supplier_image": "https://www.sportsandclassics.com/wp-content/uploads/2023/01/146454-Triumph-TR250-TR6-Spitfire-Herald-Midget-Connecting-Rod-scaled.jpg",
    "read_scope": "Own146454 product photo visually read: relieved shank with longitudinal edge flanges and rounded pocket ends. Second image is packaging,not reverse-face evidence. Factory Midget p58/107-B80 lists146454 rod and separate119813 bush. No fitted identification or calibrated tracing.",
    "retained_big_small_centers_native_mm": [
      [
        0,
        -268.75,
        43.25
      ],
      [
        0,
        -122.75,
        43.25
      ]
    ],
    "estimated_relief_y_bounds_mm": [
      -232.75,
      -142.75
    ],
    "estimated_relief_width_mm": 12.5,
    "estimated_web_thickness_mm": 4.0,
    "estimated_relief_end_radius_mm": 6.25,
    "hidden_reverse_face": "Mirrored reference hypothesis;no reverse-face photograph recovered.",
    "owner_dimensions_applied": false,
    "removed_native_volume_mm3": 13097.633664142646,
    "limits": "Shank pocket,width,depth,rounded ends and reverse-face symmetry are construction estimates from supplier topology. Existing factory-center-distance datum and all big/small bore,width,cap split,boss/fixing and installed stations stay. Retained end bore/width values come from the earlier aftermarket H-beam comparison;they are not relabeled as stock146454 or fitted dimensions. No photographed lightening/oil hole,casting mark or number is copied or assigned. No cap,bolt,small-end bush,crank,piston or engine pose changes to force a fit. No forging development,material,strength,mass balance,loaded clearance,working articulation or verified replacement/removal path."
  },
  "4": {
    "supplier_source": "https://www.sportsandclassics.com/product/146454-triumph-tr250-tr6-spitfire-herald-midget-connecting-rod/",
    "supplier_image": "https://www.sportsandclassics.com/wp-content/uploads/2023/01/146454-Triumph-TR250-TR6-Spitfire-Herald-Midget-Connecting-Rod-scaled.jpg",
    "read_scope": "Own146454 product photo visually read: relieved shank with longitudinal edge flanges and rounded pocket ends. Second image is packaging,not reverse-face evidence. Factory Midget p58/107-B80 lists146454 rod and separate119813 bush. No fitted identification or calibrated tracing.",
    "retained_big_small_centers_native_mm": [
      [
        0,
        -181.25,
        122.75
      ],
      [
        0,
        -35.25,
        122.75
      ]
    ],
    "estimated_relief_y_bounds_mm": [
      -145.25,
      -55.25
    ],
    "estimated_relief_width_mm": 12.5,
    "estimated_web_thickness_mm": 4.0,
    "estimated_relief_end_radius_mm": 6.25,
    "hidden_reverse_face": "Mirrored reference hypothesis;no reverse-face photograph recovered.",
    "owner_dimensions_applied": false,
    "removed_native_volume_mm3": 13097.633664120818,
    "limits": "Shank pocket,width,depth,rounded ends and reverse-face symmetry are construction estimates from supplier topology. Existing factory-center-distance datum and all big/small bore,width,cap split,boss/fixing and installed stations stay. Retained end bore/width values come from the earlier aftermarket H-beam comparison;they are not relabeled as stock146454 or fitted dimensions. No photographed lightening/oil hole,casting mark or number is copied or assigned. No cap,bolt,small-end bush,crank,piston or engine pose changes to force a fit. No forging development,material,strength,mass balance,loaded clearance,working articulation or verified replacement/removal path."
  }
}