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Line 31: − − 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: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:Britannica_Figure_of_the_Earth.jpg|Britannica_Figure_of_the_Earth − − File:Struve Geodetic Arc-zoom-en.svg|Zoom version of the map of the Struve Geodetic Arc. The 34 red points are the places registered in the UNESCO World Heritage Site. − − 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:Metre alloy.jpg|Preparing the first metre-alloy in May 1874, at the Conservatoire des Arts et Métiers, Paris
KS update 1.3
<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:Metric seal.svg|Seal of the International Bureau of Weights and Measures (BIPM) – Use measure (Greek: {{lang|grc|ΜΕΤΡΩ ΧΡΩ}})
</gallery>
</gallery>
== Related pages ==
== Related pages ==