File talk:Metrication by year map.svg

Shoulden't black and white be described? - Yeah, what does that white part mean? The_MP (talk) 21:08, 29 October 2010 (UTC)
 * I am *guessing* black is "does not use SI" and white (ivory?) is "No Data".Hilmar (talk) 12:01, 1 November 2010 (UTC)

Former states
Poland is shown as 1918 (date of formation of the Second Polish Republic), but metric system was adapted on partitions of Poland earlier: random website shows these dates: Prussian: 1872, Russian: 1875, Austrian: 1876.

So, does this map show MAX(state formation date, metrification date)? Then more countries need to be green: List of sovereign states by formation date. Indexheavy1 (talk) 07:54, 9 December 2010 (UTC)

Puerto Rico
According to said file, Puerto Rico has gone through metrication. However, as a US territory, it still uses US Customary Units, with some exceptions. I concede that the date might correspond to when Puerto Rico, as part of Spain "adopted" the Metric System, but with the transfer of power to the US, it was quickly reverted. — Preceding unsigned comment added by 148.85.207.130 (talk) 16:09, 8 July 2011 (UTC)

Not everything was reverted. Roads were and still are marked in kilometers and distances in road signs are also in kilometers even though speed limits are in miles per hour. There are also other things that are customarily measured in metric units such as body temperature in degrees celsius, gasoline is sold by the liter, land (small plots) is measured in square meters, water is billed by the cubic meter, bulk construction aggregates are usually sold retail by the cubic meter (though pre-mixed concrete is delivered by the cubic yard). The specific case of gasoline, it changed since the early 80s when they switched from gallons mostly due to the inability of the mechanical gas pumps of the time to dispense with prices higher than $1.00 per gallon. Although modern electronic pumps were starting to appear, this was never reverted. Luisr (talk) 18:21, 21 February 2013 (UTC)

Needs sharper transitions
All the green colors are too similar. It's almost impossible to tell whether a country metricized in 1957 or 1987. — Preceding unsigned comment added by 76.102.39.72 (talk) 05:04, 19 September 2011 (UTC)

The Austro-Hungarian Empire: Slovenia, Crotia and Bosnia
Slovenia and Croatia – now not listed – should have the same color like Austria, because they were part of the Austro-Hungarian Empire back then. For Bosnia it is likely 1878, the year it was occupied by Austro-Hungaria.

The Austro-Hungarian law on metrication came into force July 23th 1871. This law obliged the whole empire to convert to the metric system until January 1st 1876. Back then the Empire was formed by what is now:


 * Czech Republik,
 * Slovakia,
 * Hungary,
 * Slovenia,
 * Croatia,
 * parts of Poland,
 * parts of Ukraine,
 * parts of Romania,
 * parts of Serbia (the so called Vojvodina, the northern part),
 * parts of Italy (Trentino, Gorizia, Trieste, parts of the Region of Udine),
 * and of course the whole Republic of Austria.

In oder to get an adequate map it would be necessary to use the Austro-Hungarian borders from 1871/1876 for the colored layer and another layer above which shows todays borders.

http://meilensteine.woergl.at/index.php/de/meilenstein/detail/216 — Preceding unsigned comment added by Liebeskind (talk • contribs) 10:05, 14 February 2013 (UTC)