{
  "bln_no": "1",
  "sheet_zone": "1 : B1",
  "place": 1,
  "characteristic": "True position",
  "characteristic_type": "GD&T",
  "dimension_type": "STD",
  "referenced_feature": "1",
  "data_type": "NUM",
  "nominal": 1.12,
  "lower_spec_limit": 1.11,
  "upper_spec_limit": 1.14,
  "unit": "mm",
  "descriptor_datum": "A",
  "bonus_tolerance": "MMC",
  "label": "COUNTERSINK",
  "inspection_method": "CMM",
  "sampling_rule": "1 in 10",
  "operation": "OP10",
  "is_key": true
}