{
  "name": "Yard, foot, inch and pound before and after July 1, 1959",
  "desc": "The metric values of the yard, foot, inch and avoirdupois pound under the 1893–1894 ratios and under the 1959 values, and the relative change in parts per million.",
  "lic": "CC BY 4.0",
  "lic_url": "https://creativecommons.org/licenses/by/4.0/",
  "by": "The Yardstick Almanac",
  "url": "https://theyardstickalmanac.com/units/us-survey-foot/",
  "from": [
    "Foot, yard, inch and pound definitions: National Bureau of Standards and U.S. Coast and Geodetic Survey notice, Federal Register 24 FR 5348 (July 1, 1959)",
    "Mendenhall Order of April 5, 1893, and the 1866 table, as reprinted in NBS Special Publication 447"
  ],
  "how": "Compiled by The Yardstick Almanac from the data listed",
  "data_by": [
    "Computed from 24 FR 5348 (1959) and the Mendenhall Order (1893), 2026-11-01, CC BY 4.0"
  ]
}