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== Metre Media ==
== Metre Media ==
<gallery widths='160px' heights='100%' mode='traditional' caption=''>
<gallery widths='160px' heights='100%' mode='traditional' caption=''>
File:Metric seal.svg|Seal of the International Bureau of Weights and Measures (BIPM) – Use measure (Greek: {{lang|grc|ΜΕΤΡΩ ΧΡΩ}})
File:Obs-Paris-meridienne.jpg|Salle Méridienne (dite salle Cassini), Observatoire de Paris, XIVe arrondissement
File:Obs-Paris-meridienne.jpg|Salle Méridienne (dite salle Cassini), Observatoire de Paris, XIVe arrondissement
File:Repsold.jpg|[[Gravimeter]] with variant of [[Repsold-Bessel pendulum]].
File:Repsold.jpg|[[Gravimeter]] with variant of [[Repsold–Bessel pendulum]]
File:HasslerCollection 001.jpg|Triangulation near [[New York City]], 1817
File:HasslerCollection 001.jpg|Triangulation near [[New York City]], 1817
File:Appareil Ibáñez.jpg|Ibáñez apparatus calibrated on the metric Spanish Standard and used at [[Aarberg]] in [[canton of Bern]], [[Switzerland]].
File:Appareil Ibáñez.jpg|Ibáñez apparatus calibrated on the metric Spanish Standard and used at [[Aarberg]], in [[canton of Bern]], [[Switzerland]]
File:Britannica_Figure_of_the_Earth.jpg|Britannica_Figure_of_the_Earth
File:Britannica_Figure_of_the_Earth.jpg|Britannica_Figure_of_the_Earth
File:US National Length Meter.JPG|Closeup of National Prototype Meter Bar No. 27, made in 1889 by the International Bureau of Weights and Measures (BIPM) and given to the United States, which served as the standard for defining all units of length in the US from 1893 to 1960. In 1960 the SI changed the standard of length to define the meter by the wavelength of light of a spectral line of
File:US National Length Meter.JPG|Closeup of National Prototype Meter Bar No. 27, made in 1889 by the International Bureau of Weights and Measures (BIPM) and given to the United States, which served as the standard for defining all units of length in the US from 1893 to 1960. In 1960 the SI changed the standard of length to define the meter by the wavelength of light of a spectral line of
File:Metric standards Rijksmuseum.jpg|Historic Dutch replicas of metric standards in the collection of Rijksmuseum, Amsterdam: iron metre with case constructed by Étienne Lenoir in 1799, copper grave kilogram with case (1798), copper volume measures (1829).
File:Metric standards Rijksmuseum.jpg|Historic Dutch replicas of metric standards in the collection of Rijksmuseum, Amsterdam: iron metre with case constructed by Étienne Lenoir in 1799, copper grave kilogram with case (1798), copper volume measures (1829)
File:Metre alloy.jpg|Preparing the first metre-alloy in May 1874, at the Conservatoire des Arts et Métiers, Paris
File:Metre alloy.jpg|Preparing the first metre-alloy in May 1874, at the Conservatoire des Arts et Métiers, Paris
</gallery>
</gallery>
== Related pages ==
== Related pages ==