{
  "id": "UN138",
  "name": "pica (printer's)",
  "ml_name": "ip_pc_{typog}",
  "symbol": "pc",
  "reference": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8#P"
}