{
  "@context": "https://schema.org",
  "@type": [
    "Standard",
    "CreativeWork"
  ],
  "publisher": {
    "@type": "Organization",
    "name": "OIML"
  },
  "@id": "urn:oiml:pub:r:39",
  "identifier": "R 39",
  "name": "Rockwell hardness machines",
  "description": "This Recommendation deals with the verification of machines used to test hardness using the Rockwell B, F, T, C, A, and N systems and subject to state metrological control.",
  "urn": "urn:oiml:pub:r:39",
  "hasEdition": [
    "/publications/pub/r39-2006/",
    "/publications/pub/r39-1981/",
    "/publications/pub/r39-1977/"
  ],
  "hasSuccessor": [
    "OIML R 39:2006",
    "OIML R 39:1981"
  ]
}