{
 "object": "BigBox",
 "mesh": "BigBox/bigbox.ply",
 "marker_radius_mm": 8.0,
 "method": "upright-at-rest fit of marker centres to the mesh surface",
 "instances": {
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   "base_on_stack_of": 0,
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   "independent_windows_agreeing": 1,
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   "cross_check": [
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     "session": "20261012/LM28/20261012_102514_session43",
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     "independent": true
    },
    {
     "session": "20261013/LM27/20261013_034331_session55",
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    },
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     "independent": true
    },
    {
     "session": "20261012/DR08/20261012_084746_session21",
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     "independent": true
    },
    {
     "session": "20261012/DR08/20261012_084746_session21",
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   ],
   "visual_check": {
    "ok": true,
    "note": "mesh on the carried box, 20261012/LM28/20261012_102803_session44",
    "date": "2026-10-21"
   }
  }
 }
}