the   ENGINEERING   page

 Length  Temperature
 Area  Pressure
 Volume  Volumetric flow
 Time  Velocity
 Mass  Force
 Density  Surface tension
 Caloric value  Latent heat
 Dynamic viscosity
 Kinematic viscosity
 Specific enthalpy
 Specific heat capacity
 Thermal conductivity
 Energy (Heat transferred)
 Mass per unit area
 Heat flux density
 Heat transfer coefficient
 Volumetric flow  Mass flow
 Power  Torque
 Moment of inertia
 Momentum
 Angular moment of inertia

       Home Up Back e - mail Close Window Info

    Information about Empirial units

    Advertisments



    Top of Page

    The Imperial (U.K.) System of Measurements

    category units and relationship
    length 12 inches = 1 foot
    3 feet = 1 yard
    22 yard = 1 chain
    10 chains = 1 furlong
    8 furlong = 1 mile
    5280 feet = 1 mile
    1760 yards = 1 mile
     
    area 144 square inches = 1 square foot
    9 square feet = 1 square yard
    4840 square yards = 1 acre
    640 acres = 1 square mile
     
    Volume 1728 cubic inches = 1 cubic foot
    27 cubic feet = 1 cubic yard
     
    Capacity 20 fluid ounces = 1 pint
    4 gills = 1 pint
    2 pints = 1 quart
    4 quarts = 1 gallon
    8 pints = 1 gallon
     
    Mass (Avoirdupois) 437.5 grains = 1 ounce
    16 ounces = 1 pound
    14 pound = 1 stone
    8 stones = 1 hundredweight [cwt]
    20 cwt = 1 ton
     
    Troy Weights 24 grains = 1 pennyweight
    20 pennyweights = 1 ounce
    12 ounces = 1 pound
     
    Apothecaries' Measures 20 minims = 1 fl.scruple
    3 fl.scruples = 1 fl.drachm
    8 fl.drachms = 1 fl.ounce
    20 fl.ounces = 1 pint
     
    Apothecaries' Weights 20 grains = 1 scruple
    3 scruples = 1 drachm
    8 drachms = 1 ounce
    12 ounces = 1 pound
     
    Notes:
    • The difference between volume and capacity is there for historical reasons only
    • Note particularly that the UK gallon is a different size to the US gallon so that NO liquid measures of the same name are the same size in the UK and US systems. Also that the ton(UK) is 2240 pounds while a ton(US) is 2000 pounds. These are also referred to as a long ton and short ton respectively
    • The old Imperial (now UK) system was originally defined by three standard measures: the yard, the pound and the gallon which were held in London. They are now defined by reference to the S I measures of the metre, the kilogram and the litre
    • These equivalent measures are exact.

      1 yard = 0.9144 metres - same in US
      1 pound = 0.453 592 37 kilograms - same in US
      1 gallon = 4.546 09 litres - different in US





    Top of Page


       The-Engineering-Page.com   About Us     Terms of Use     Tell a Friend     e-mail     + Favorites