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## Topic 17: Units of measurement

You need to be familiar with the following terms for units of measurement. You may be asked for a suitable unit of measurement for a certain job.

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Units of distance:

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Metric system: Millimetres (mm), Centimetres (cm), Metres (m), Kilometres (km)

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10 mm    =  1 cm

100 cm   =  1 m

1 000 m  =  1 km

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Imperial system: Inches, Feet, Yards, Miles

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12 inches    =  1 foot

3 feet          =  1 yard

1760 yards  =  1 mile

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Units of weight:

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Metric system: Milligrams (mg), Grams (g), Kilograms (kg), Tonnes

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1 000 mg      =  1 g

1 000 g    =  1 kg

1 000 kg  =  1 tonne

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Imperial system: Ounces, Pounds, Stones, Tons

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16 ounces   =  1 pound

14 pounds   =  1 stone

160 stones  =  1 ton

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Units of volume:

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Metric system: Millilitres (ml), Litres (l)

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1 000 ml  =  1 litre

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Imperial system: Pints, Gallons

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8 pints  =  1 gallon

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Units of temperature:

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Degrees Celsius (°C)

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Degrees Fahrenheit (°F)

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