{
  "schema": "midget-manifold-hardware-evidence-v1",
  "units": "mm",
  "method": null,
  "basis": null,
  "configuration": null,
  "photo_refs": [],
  "head_marking_observation": null,
  "inlet_manifold_marking_observation": null,
  "exhaust_manifold_marking_observation": null,
  "observed_head_attachment_fixings": [],
  "observed_inlet_to_exhaust_fixings": [],
  "observed_carburetor_fixings": [],
  "observed_downpipe_fixings": [],
  "record_fields_to_copy_for_each_observed_fixing": {
    "owner_location_label": null,
    "physical_location_note": null,
    "configuration": null,
    "photo_refs": [],
    "stud_or_bolt_observation": null,
    "exposed_stud_projection_mm": null,
    "projection_reference_face": null,
    "removed_stud_overall_length_mm": null,
    "thread_identification_and_method": null,
    "clamp_form_and_seating_note": null,
    "washer_stack_note": null,
    "nut_form_note": null,
    "observed_nut_across_flats_mm": null,
    "tool_approach_and_obstruction_note": null,
    "measurement_point_and_source_note": null
  },
  "catalog_reference_links": [
    "https://www.spridgets.de/downloads/Parts-1977.pdf#page=65",
    "https://mossmotors.com/media/wysiwyg/catalogpdf/spm_catalog_web.pdf#page=47"
  ],
  "limits": "Blank evidence worksheet, not a native CAD measurement-log input. Empty observation lists do not establish that fixings are absent. Record actual locations and additional/missing hardware without forcing catalog quantities. Keep exposed projection, removed overall length and installed/removed configurations separate. No fitted thread, engagement, tightening procedure, CAD coordinates, tool clearance or removal path is inferred."
}