comes from apple pie
The Metric system is just over 200 years old. I hope that is what you were looking for:) by the way that i smiley
The metric system is used EVERYWHERE, not just in healthcare... with the exception of a few countries that still cling to the old-fashioned system.
No pounds are part of the old medieval avoirdupois system.
The only unit that appears in both the modern SI (metric) system and the old fashioned system is the second.
The beauty of the metric system is that it is the same in every country. If you mean what is 800 metres in old fashioned yards, its 874.9 yards.
In the old days the English created the imperial system (the us still use this system). But nowadays they use the metric system.
The revolutionaries sought to reject everything old, that is to say, they wished to distance themselves from everything that had to do with the old Monarchy. Not only did this lead to the metric system, it also led to a new calender and new days of the week.
You use exactly the same instruments to measure speed in the metric system as you use in any other system. For example, a speedometer, or a distance measuring device and a stopwatch. The difference is that these devices are calibrated in metric units, instead of old-fashioned units.
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The North German Confederation adopted the metric system in 1868 and the remaining states in 1875 (after unification). In some of the German states the metric and pre-metric systems were both in use before 1868 - and after 1875. I have an old German ruler which is metric on one edge and give Rhenish inches on the other edge.
One inch is equivalent to 2.54 centimeters in the metric system. In older metric terms, it can also be approximated as 25.4 millimeters. This conversion reflects the standardized relationship between inches and metric measurements.
The country that does not use the metric system has the advantage that its old equipment continues to work. Its old measuring system continues to work. It does not need to make changes to sell in its own markets.