Example image of eyePlorer eyePlorer map for 'Imperial units': British Empire Sphere of influence English units United States customary units Avoirdupois Systems of measurement Weights and Measures Act Metric system Metrication Gallon Poundal Slug (mass) Fahrenheit Gram Inch of mercury Litre Pound (mass) Comparison of the imperial and US customary measurement systems Apothecaries' system Troy weight Decimal Long ton Ton Tonne Metric Martyrs Chain (length) London Underground Ashford International railway station Dollands Moor Freight Yard High Speed 1 Multi-storey car park Brian Mulroney Environment Canada CIDR-FM CIMX-FM Hundredweight Square foot Sturm, Ruger 7.62 mm caliber 9x19mm Parabellum Grain (mass) Nautical mile Western world Malay language European Union Beer Pint Public house 1982 in Singapore British standard brass thread