Imperial Armour Starting in 2015, Forgeworld stopped using the `Volume X' notation, using just Imperial Armour and the title of the book. The rules contained in the following books are no longer valid, having been superseded by later editions of the "Warhammer 40,000" game and other Imperial Armour books. <br> Forge World has also published two Model Masterclass books, which focus on painting the often very large and extensive models they produce: Imperial Armour Imperial Armour is a series of rules supplements to the "Warhammer 40,000" table-top game, along with an associated range of vehicle-size resin model kits. Both are produced by
Imperial and US customary measurement systems (42 US gallons, 34.97 imperial gallons or 159.0 litres) used in the oil industry has the dimension of volume and could be replaced by the gallon, cubic metre or litre. The definitions of potential difference (volt), electric current (ampere), electrical resistance (ohm) were defined in terms of metric units, international agreement having been reached at a series of IEC Congress in Chicago between 1881 and 1906 when the electrical industry was in its infancy. At that time the metric system had become established in continental Europe while in the United Kingdom metrication was an active issue. Similarly, the units of