{
  "url": "https://openlegislation.uk/weights-and-measures-local-and-working-standard-weights-and-testing-equipment-regulations-1986/schedule-2",
  "json_url": "https://openlegislation.uk/weights-and-measures-local-and-working-standard-weights-and-testing-equipment-regulations-1986/schedule-2.json",
  "legislation": "uksi/1986/1685",
  "legislation_title": "The Weights and Measures (Local and Working Standard Weights and Testing Equipment) Regulations 1986",
  "legislation_url": "https://openlegislation.uk/weights-and-measures-local-and-working-standard-weights-and-testing-equipment-regulations-1986",
  "path": "schedule/2",
  "kind": "schedule",
  "number": "2",
  "heading": null,
  "text": "TABLE 1\nIMPERIAL SYSTEM Avoirdupois weights\nLimit of error in milligrams\nLocal or working standards of—\nLocal standard\nWorking standard\n56 lb\n400\n1250\n28 lb\n200\n650\n14 lb\n100\n320\n7 lb\n50\n160\n4 lb\n30\n90\n2 lb\n15\n45\n1 lb\n7\n20\n8 oz\n3\n10\n4 oz\n2\n6\n2 oz\n1\n3\n1 oz\n0.8\n2.5\n1/2 oz\n0.7\n2\n1/4 oz\n0.5\n1.5\n1/8 oz\n0.5\n1.5\n1/16 oz\n0.4\n1.2\n1/32 oz\n0.3\n1\n50 lb\n350\n1100\n20 lb\n150\n450\n10 lb\n70\n220\n5 lb\n35\n110\nTABLE 2\nWeights expressed as multiples or fractions of 1/7000 lb\nLocal standard of—\nLimit of error in milligrams\n100\n0.53\n50\n0.44\n30\n0.40\n20\n0.33\n10\n0.27\n5\n0.22\n3\n0.20\n2\n0.17\n1\n0.13\n0.5\n0.11\n0.3\n0.10\n0.2\n0.09\n0.1\n0.06\n0.05\n0.06\n0.03\n0.06\n0.02\n0.06\n0.01\n0.06\nTABLE 3\nTroy weights\nLocal standard of ounces troy—\nLimit of error in milligrams\n500\n250\n400\n200\n300\n150\n200\n100\n100\n50\n50\n25\n40\n20\n30\n15\n20\n10\n10\n5\n5\n2.5\n4\n2.0\n3\n1.5\n2\n1.0\n1\n1.0\n0.5\n0.7\n0.4\n0.6\n0.3\n0.6\n0.2\n0.5\n0.1\n0.4\n0.05\n0.4\n0.04\n0.3\n0.03\n0.3\n0.025\n0.3\n0.02\n0.25\n0.01\n0.22\n0.005\n0.18\n0.004\n0.16\n0.003\n0.15\n0.002\n0.13\n0.001\n0.11\nTABLE 4\nMETRIC SYSTEM Metric weights other than carat (metric) weights\nLimit of error in milligrams\nLocal or working standards of—\nLocal standard\nWorking standard\n20 kg\n300\n1000\n10 kg\n150\n500\n5 kg\n75\n250\n2 kg\n30\n100\n1 kg\n15\n50\n500 g\n7.5\n25\n200 g\n3.0\n10\n100 g\n1.5\n5\n50 g\n1.0\n3\n20 g\n0.8\n2.5\n15 g\n0.7\n2.2\n10 g\n0.6\n2.0\n5 g\n0.5\n1.5\n4 g\n0.5\n1.5\n3 g\n0.4\n1.2\n2 g\n0.4\n1.2\n1 g\n0.3\n1.0\n500 mg\n0.25\n0.8\n400 mg\n0.25\n0.8\n300 mg\n0.25\n0.8\n200 mg\n0.20\n0.6\n150 mg\n0.20\n0.6\n100 mg\n0.15\n0.5\n50 mg\n0.12\n0.4\n20 mg\n0.10\n0.3\n10 mg\n0.08\n0.25\n5 mg\n0.06\n0.20\n2 mg\n0.06\n0.20\n1 mg\n0.06\n0.20\nTABLE 5\nCarat (metric) weights\nLocal standard of— C.M.\nLimit of error in milligrams\n500\n1.5\n200\n0.93\n100\n0.80\n50\n0.60\n20\n0.47\n10\n0.40\n5\n0.30\n2\n0.23\n1\n0.20\n0.5\n0.15\n0.25\n0.12\n0.20\n0.11\n0.10\n0.10\n0.05\n0.08\n0.02\n0.06\n0.01\n0.06\nTABLE 6\nTest weights\nImperial weight\nLimit of error\nMetric weight\nLimit of error\n11200 lb\n500 g\n4480 lb\n200 g\n5000 kg\n500 g\n2240 lb\n100 g\n2000 kg\n200 g\n1120 lb\n50 g\n1000 kg\n100 g\n1008 lb\n50 g\n500 kg\n50 g\n560 lb\n20 g\n250 kg\n20 g\n448 lb\n20 g\n200 kg\n20 g\n224 lb\n10 g\n100 kg\n10 g\n112 lb\n5 g\n50 kg\n5 g",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [
    {
      "type": "omitted",
      "affecting": "uksi/1994/1851",
      "affecting_title": "The Weights and Measures (Metrication Amendments) Regulations 1994"
    },
    {
      "type": "omitted",
      "affecting": "uksi/1994/1851",
      "affecting_title": "The Weights and Measures (Metrication Amendments) Regulations 1994"
    },
    {
      "type": "substituted",
      "affecting": "uksi/1994/1851",
      "affecting_title": "The Weights and Measures (Metrication Amendments) Regulations 1994"
    },
    {
      "type": "substituted",
      "affecting": "uksi/1991/1775",
      "affecting_title": "The Weights and Measures (Local and Working Standard Weights and Testing Equipment) (Amendment) Regulations 1991"
    }
  ],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1986/1685/schedule/2",
    "retrieved_at": "2026-10-29T16:40:41.631196+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}