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Summary

A graph of the relative change in mass of selected kilogram prototypes. From The Third Periodic Verification of National Prototypes of the Kilogram (1988–1992), G. Girard, Metrologia 31 (1994) 317–336

• The IPK is represented by the stylized K in an old-English typeface.

• No. 39, which lost 665 µg relative to the IPK, had originally been allocated to Japan in 1894. In 1958, following the Second World War, it was ceded to the Republic of Korea.

• No. 23 was allocated to Finland in 1890.

• No. 8(41) was accidentally stamped with the number 41, but its accessories carry the proper number 8: since there is no prototype marked 8, this prototype is referred to as 8(41).

Licensing

I, the copyright holder of this work, hereby grant the permission to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:12, 11 December 2007		790×500 (202 KB)	Greg L (Talk | contribs)
	17:03, 11 December 2007		790×500 (202 KB)	Greg L (Talk | contribs)
	04:41, 11 December 2007		790×500 (202 KB)	Greg L (Talk | contribs)
	07:27, 10 December 2007		790×500 (189 KB)	Greg L (Talk | contribs)
	07:16, 10 December 2007		790×500 (179 KB)	Greg L (Talk | contribs)
	04:22, 10 December 2007		790×500 (190 KB)	Greg L (Talk | contribs)	(A graph of the relative change in mass of selected kilogram prototypes. From ''The Third Periodic Verification of National Prototypes of the Kilogram (1988–1992)'', G. Girard, Metrologia '''31''' (1994) 317–336)

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