# The Factories Act 1961 etc. (Metrication) Regulations 1983, Schedule 1: AMENDMENTS TO THE FACTORIES ACT 1961 (1) (2) (3) (4) Provision to be amended Subject-matter of measurement Present measurement Measurement to be substituted The Factories Act 1961 Section 2(2) Minimum amount of cubic space per person employed in a workroom Four hundred cubic feet 11 cubic metres Section 2(5) Maximum height from floor to be taken into account when calculating cubic space Fourteen feet 4.2 metres Section 3(2) Minimum temperature of workroom after the first hour Sixty degrees 16 degrees Celsius Section 18(1) Minimum height of edge of fixed vessel, structure, sump or pit containing scalding, corrosive or poisonous liquid which need not be covered or fenced Three feet 920 millimetres Minimum height of secure fencing to surround the vessel, structure, sump or pit etc. Three feet 920 millimetres Section 18(2)(a) Minimum width of ladder, stair or gangway placed above, across or inside any vessel, structure, sump etc. Eighteen inches 460 millimetres Section 18(2)(b) Minimum height of fencing on either side of ladder, stair or gangway Three feet 920 millimetres Section 18(3) Passage between adjoining vessels etc to be barred unless there is (a) minimum space between vessels or Eighteen inches 460 millimetres (b) minimum height of secure fencing Three feet 920 millimetres Section 19(1) Minimum distance between traversing carriage of any self-acting spinning mule and any part of the head stock of another such machine Twelve inches 310 millimetres Section 26(1)(f) Maximum thickness of chains or slings to be annealed every six months Half-inch 13 millimetres Section 27(7) Minimum distance between over-head travelling crane and person working on or near its wheel track Twenty feet 6 metres Section 29(2) Distance which person will be liable to fall Six feet six inches 2 metres Section 30(2) Minimum length of manhole (if rectangular or oval) in any chamber, tank, vat etc. Eighteen inches 460 millimetres Minimum width of manhole (if rectangular or oval) Sixteen inches 410 millimetres Minimum diameter of manhole (if circular) Eighteen inches 460 millimetres Minimum length of manhole (if rectangular or oval) in any tank wagon and other mobile plant Sixteen inches 410 millimetres Minimum width of manhole (if rectangular or oval) Fourteen inches 360 millimetres Minimum diameter of manhole (if circular) Sixteen inches 410 millimetres Section 39(7) Storage capacity of water-sealed gasholder Five thousand cubic feet 140 cubic metres Section 68(4) Wet bulb temperature reading above which artificial humidification is prohibited Seventy two and a half degrees 22.5 degrees Celsius Wet bulb temperature reading above which artificial humidification is prohibited when spinning cotton or spinning merino or cashmere by the French or dry process or spinning or combing wool by that process Eighty degrees 26.5 degrees Celsius Section 68(6) Temperature of water absorbing oxygen from permanganate of potash solution Sixty degrees 16 degrees Celsius Ratio of water to oxygen absorbed Half a grain per gallon of water 7 milligrams per litre of water Section 68(8) Minimum difference in readings of the wet and dry bulb thermometers Four degrees 2 degrees Celsius Section 175(2)(n) Storage capacity of gasholder Five thousand cubic feet 140 cubic metres --- Source: https://www.legislation.gov.uk/uksi/1983/978/schedule/1 (the official version) Page: https://openlegislation.uk/factories-act-1961-etc-metrication-regulations-1983/schedule-1 Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.