{
  "id": "UN149",
  "name": "ton, register",
  "ml_name": "ip_t_{reg}",
  "symbol": "t_{reg}",
  "reference": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8#T"
}