{
  "url": "https://openlegislation.uk/weights-and-measures-local-and-working-standard-capacity-measures-and-testing-equipment-regulations-1990/part-I/regulation-2",
  "json_url": "https://openlegislation.uk/weights-and-measures-local-and-working-standard-capacity-measures-and-testing-equipment-regulations-1990/part-I/regulation-2.json",
  "legislation": "uksi/1990/2626",
  "legislation_title": "The Weights and Measures (Local and Working Standard Capacity Measures and Testing Equipment) Regulations 1990",
  "legislation_url": "https://openlegislation.uk/weights-and-measures-local-and-working-standard-capacity-measures-and-testing-equipment-regulations-1990",
  "path": "part/I/regulation/2",
  "kind": "regulation",
  "number": "2",
  "heading": "Interpretation",
  "text": "(1) In these Regulations:—\n“the Act” means the Weights and Measures Act 1985;\n“differential pressure gauge” means an instrument used to determine the pressure loss across either a cold-water meter or a reference meter for water;\n“discrimination threshold” means the smallest change which produces a perceptible change in the indication;\n“linearity” means the horizontal band within which the graph of the meter error of a reference meter lies over the authorised range of flowrates;\n“multifiller” means a device consisting of a number of calibrated measures, capable of dispensing simultaneously known quantities of water, used for the testing of capacity measures;\n“piston prover” means a device which can deliver or accept water in quantities determined by the displacement of a piston in a cylinder;\n“proving tank” does not include a proving tank for water;\n“proving tank for water” means a local or working standard capacity measure which is used solely with water to test cold-water meters or reference meters for water;\n“reference meter” means a meter for use in testing measuring equipment used for the measurement of liquid fuel delivered from road tankers;\n“repeatability” means the ability of weighing or measuring equipment to indicate, under defined conditions of use, closely similar quantities on repeated measurings, expressed as a 95 per cent confidence interval;\n“suitable weighing machine” means a weighing machine having a discrimination threshold and a repeatability in grams not exceeding one fifth of the limit of error expressed in millilitres of the standard or equipment it is being used to test; and\n“95 per cent confidence interval” means the range of values within which the true value may be expected to lie with a 0.95 level of probability.\n(2) The abbreviations of, and symbols for, units of measurement used in these Regulations refer to the relevant units as follows:—\nImperial System\nMetric System\nfluid ounce\nfl oz\nmillilitre\nml\npint\npt\nlitre\nl\ngallon\ngal",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1990/2626/part/I/regulation/2",
    "retrieved_at": "2026-10-29T14:53:54.257768+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."
}