{
  "saved_at_utc": "2026-06-27T13:37:26.960957+00:00",
  "stage": "stage_2_view_selection",
  "provider": "openrouter",
  "model": "qwen/qwen3-vl-30b-a3b-instruct",
  "llm_data": {
    "assembly_info": {
      "title": "Needle Insulin Pen",
      "description": "A precision-engineered needle for an insulin pen, designed for safe and accurate delivery of medication. The component features a long, slender shaft with measurement markings and a multi-part connection mechanism at the base.",
      "material": "Stainless Steel"
    },
    "selected_views": [
      {
        "type": "Front",
        "reason": "The Front view provides the primary profile of the needle, clearly showing its overall length, the graduated scale along the shaft, and the connection mechanism at the base. This view is essential for understanding the part's primary function and dimensions."
      },
      {
        "type": "Top",
        "reason": "The Top view is crucial as it shows the circular cross-section of the needle shaft and the pattern of the holes on the base flange, which are not visible in the Front view. It provides a clear view of the diameter and the arrangement of the connection features."
      },
      {
        "type": "Isometric",
        "reason": "The Isometric view offers a comprehensive 3D perspective, helping to visualize the part's complex geometry, including the taper of the shaft, the flange, and the connection mechanism, which are difficult to grasp from orthographic views alone."
      },
      {
        "type": "Left",
        "reason": "The Left view provides a side profile that clearly shows the thickness of the flange and the internal structure of the connection hub, revealing details about the wall thickness and the internal bore that are not visible from the Front or Top views."
      }
    ],
    "section_views": [
      {
        "symbol": "A",
        "normal": [
          0,
          1,
          0
        ],
        "origin": [
          48.03,
          0.0,
          0.0
        ],
        "reason": "This section cut through the center of the shaft reveals the internal bore diameter and the wall thickness, which are critical for the needle's functionality and manufacturing. It confirms the hollow nature of the shaft and the thickness of the material."
      },
      {
        "symbol": "B",
        "normal": [
          0,
          0,
          1
        ],
        "origin": [
          84.0,
          0.0,
          0.0
        ],
        "reason": "This section cut through the connection hub shows the internal geometry of the flange and the bore, revealing the concentric rings and the wall thickness of the base. This is essential for understanding how the needle connects to the pen."
      }
    ],
    "detail_views": [
      {
        "reference": "C",
        "base_view": "Front",
        "anchor": [
          84.0,
          0.0,
          0.0
        ],
        "radius": 10,
        "reason": "This detail view magnifies the connection hub at the base of the needle, showing the precise arrangement of the holes and the internal bore. This is critical for ensuring the correct fit and function of the connection mechanism."
      },
      {
        "reference": "D",
        "base_view": "Top",
        "anchor": [
          48.03,
          0.0,
          0.0
        ],
        "radius": 5,
        "reason": "This detail view magnifies the measurement markings on the shaft, ensuring that the scale is clearly visible and legible for accurate dosage measurement."
      }
    ],
    "dimensions": {
      "Front": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 95.1,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            48.03,
            0.0,
            0.0
          ],
          "value_approx": 6.38,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            84.0,
            0.0,
            0.0
          ],
          "value_approx": 10.36,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 2
        },
        {
          "type": "linear_distance",
          "dim_type": "Distance",
          "match_strategy": "between_circles",
          "circle_a": {
            "location_3d": [
              84.0,
              0.0,
              0.0
            ],
            "radius_approx": 5.18
          },
          "circle_b": {
            "location_3d": [
              48.03,
              0.0,
              0.0
            ],
            "radius_approx": 3.19
          },
          "value_approx": 35.97,
          "placement": "below",
          "offset_index": 3,
          "tolerance": null
        },
        {
          "type": "center_distance",
          "dim_type": "Distance",
          "match_strategy": "between_circles",
          "circle_a": {
            "location_3d": [
              84.0,
              0.0,
              0.0
            ],
            "radius_approx": 5.18
          },
          "circle_b": {
            "location_3d": [
              48.03,
              0.0,
              0.0
            ],
            "radius_approx": 3.19
          },
          "value_approx": 35.97,
          "placement": "below",
          "offset_index": 4,
          "tolerance": null
        }
      ],
      "Top": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            48.03,
            0.0,
            0.0
          ],
          "value_approx": 6.38,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            84.0,
            0.0,
            0.0
          ],
          "value_approx": 10.36,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 2
        },
        {
          "type": "linear_distance",
          "dim_type": "Distance",
          "match_strategy": "nearest_edge_pair",
          "value_approx": 95.1,
          "placement": "below",
          "offset_index": 3,
          "tolerance": null
        }
      ],
      "Isometric": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 95.1,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 10.4,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            48.03,
            0.0,
            0.0
          ],
          "value_approx": 6.38,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 2
        }
      ],
      "Left": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            84.0,
            0.0,
            0.0
          ],
          "value_approx": 10.36,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            48.03,
            0.0,
            0.0
          ],
          "value_approx": 6.38,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 2
        },
        {
          "type": "wall_thickness",
          "dim_type": "Distance",
          "match_strategy": "nearest_parallel_edges",
          "location_3d": [
            84.0,
            0.0,
            0.0
          ],
          "value_approx": 2.58,
          "placement": "below",
          "offset_index": 3,
          "tolerance": null
        }
      ],
      "Section A-A": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            48.03,
            0.0,
            0.0
          ],
          "value_approx": 6.38,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "wall_thickness",
          "dim_type": "Distance",
          "match_strategy": "nearest_parallel_edges",
          "location_3d": [
            48.03,
            0.0,
            0.0
          ],
          "value_approx": 3.19,
          "placement": "below",
          "offset_index": 2,
          "tolerance": null
        }
      ],
      "Section B-B": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            84.0,
            0.0,
            0.0
          ],
          "value_approx": 10.36,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "wall_thickness",
          "dim_type": "Distance",
          "match_strategy": "nearest_parallel_edges",
          "location_3d": [
            84.0,
            0.0,
            0.0
          ],
          "value_approx": 2.58,
          "placement": "below",
          "offset_index": 2,
          "tolerance": null
        }
      ],
      "Detail C": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            84.0,
            0.0,
            0.0
          ],
          "value_approx": 10.36,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "center_distance",
          "dim_type": "Distance",
          "match_strategy": "between_circles",
          "circle_a": {
            "location_3d": [
              84.0,
              0.0,
              0.0
            ],
            "radius_approx": 5.18
          },
          "circle_b": {
            "location_3d": [
              84.0,
              0.0,
              0.0
            ],
            "radius_approx": 2.0
          },
          "value_approx": 3.18,
          "placement": "below",
          "offset_index": 2,
          "tolerance": null
        }
      ],
      "Detail D": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            48.03,
            0.0,
            0.0
          ],
          "value_approx": 6.38,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "linear_distance",
          "dim_type": "Distance",
          "match_strategy": "nearest_edge_pair",
          "value_approx": 95.1,
          "placement": "below",
          "offset_index": 2,
          "tolerance": null
        }
      ]
    }
  }
}