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| | Tangram Technology Ltd. - Metric system and conversion factors |
 | | The unit of energy in all forms is the joule (newton x metre), and of power the joule per second (watt); thus the variously defined calories, together with the kilowatt hour, the Btu and the horsepower are all superseded. |
 | | In the metric system of measurements, the principal unit for length is the metre; the principal unit for capacity, the litre; and the principal unit for weight, the gramme. |
 | | For cubic measures, cubic metre, cubic decimetre (litre), cubic centimetre, and cubic millimetre. |
| www.tangram.co.uk /GI-InfoSheet15-MetricSystem&ConversionFactors.html (649 words) |
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