{
  "id": "UN191",
  "name": "inch of mercury (conventional, 32 \u00b0F)",
  "ml_name": "ip_in_{Hg}",
  "symbol": "inHg",
  "reference": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8#I"
}