Tonne
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The tonne is a unit of mass equal to 1,000 kilograms. It is also referred to as a metric ton in the United States to distinguish it from the non-metric units of the short ton and the long ton. One ton
A one-tonne (1000-kilogram) concrete block in Leeds, UK
The International System of Units, internationally known by the abbreviation SI, is the modern form of the metric system and the world's most widely used system of measurement. It is the only system o
Tonne
…tonne megagram A one-tonne (1000-kilogram) concrete block in Leeds, UK General information Unit system Non-SI Unit of mass Symbol t Mg In SI units: 1000 kg The tonne ( or ; symbol: t) is a unit of mass equal to 1,000 kilograms. It is also referred to as a metric…
Silicon sphere for the Avogadro project used for measuring the Avogadro constant to a relative standard uncertainty of 2×10−8 or less, held by Achim Leistner
Stone marking the Austro-Hungarian/Italian border at Pontebba displaying myriametres, a unit of 10 km used in Central Europe in the 19th century (but since deprecated)
Closeup of the National Prototype Metre, serial number 27, allocated to the United States