{
  "url": "https://openlegislation.uk/measuring-instruments-regulations-2016/schedule-1I/part/chapter-1/paragraph-2",
  "json_url": "https://openlegislation.uk/measuring-instruments-regulations-2016/schedule-1I/part/chapter-1/paragraph-2.json",
  "legislation": "uksi/2016/1153",
  "legislation_title": "The Measuring Instruments Regulations 2016",
  "legislation_url": "https://openlegislation.uk/measuring-instruments-regulations-2016",
  "path": "schedule/1I/part/chapter/1/paragraph/2",
  "kind": "paragraph",
  "number": "2",
  "heading": "MPEs",
  "text": "The MPE, positive or negative in mm, between two non-consecutive scale marks is (a + bL), where:\n— L is the value of the length rounded up to the next whole metre; and\n— a and b are given in Table 1 below.\nWhen a terminal interval is bounded by a surface, the MPE for any distance beginning at this point is increased by the value c given in Table 1.\nTable 1\nAccuracy Class\na(mm)\nb\nc(mm)\nI\n0.1\n0.1\n0.1\nII\n0.3\n0.2\n0.2\nIII\n0.6\n0.4\n0.3\nThe MPE for the length between consecutive scale marks, and the maximum permissible difference between two consecutive intervals, are given in Table 2 below.\nTable 2\nLength i of the interval\nMPE or difference in millimetres according to accuracy class\nI\nII\nIII\ni ≤ 1 mm\n0.1\n0.2\n0.3\n1 mm < i ≤ 1 cm\n0.2\n0.4\n0.6\nWhere a rule is of the folding type, the jointing shall be such as not to cause any errors, supplementary to those above, exceeding: 0.3 mm for Class II, and 0.5 mm for Class III.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Schs. 1A-1K inserted (E.W.S.) (31.12.2020) by The Product Safety and Metrology etc. (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/696), reg. 1, Sch. 27 para. 49 (with Sch. 27 para. 50(a)) (as amended by S.I. 2020/676, regs. 1(1), 2); 2020 c. 1, Sch. 5 para. 1(1)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2016/1153/schedule/1I/part/chapter/1/paragraph/2",
    "retrieved_at": "2026-10-28T23:17:40.726189+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."
}