KM vs Miles

[Andy in Germany]

By contrast, the foot is based on the length of the human foot. This invites the question of whose foot? Everybody is different. This led to there being (before the metric system was developed) there being dozens of different lengths of the foot for different areas and different times, varying between about 10½ and 13½ (imperial) inches.

This was a major issue here: Until the mid 1800's the next village to the south was in Prussia, my village was in Austria, and Württemberg was just up the hill: Pre metric all used different definitions of a "foot", not to mention different weights, making any trade between them a real pain.

 

[Andy in Germany]

Here I am, stood in field with the clothes I stand in. How do I use that definition to measure out an area?



Perfect, I have my measuring tools with me.

Which is fine, until your tax assessor comes along and has smaller feet, or you try to sell it to someone with bigger feet.

 

[Punkawallah]

Unless it's a very small area then you pace it, which is roughly a metre, or roughly a yard, depending on your stride length. That's much easier than putting your feet end-to-end repeatedly. And the variance between people is similar to that for feet; quite possibly less. So both systems work equally well, albeit with a 10-20% inaccuracy, for that application, though the metre has the advantage, over the yard, of not being 'three of something smaller'. And once you have your result in square metres, converting to hectares is a good bit easier than to acres!

Only for someone not used to it. An acre is one chain by one furlong (22 yards by 220 yards).
The average pace is about 30” (some 75cm in new money), 12 paces about 360” (or 10 yards).
And the meter, it must be remembered, is 10 decimetres.

 

[Punkawallah]

This was a major issue here: Until the mid 1800's the next village to the south was in Prussia, my village was in Austria, and Württemberg was just up the hill: Pre metric all used different definitions of a "foot", not to mention different weights, making any trade between them a real pain.

S’cultural, innit! ;-)

 

[Andy in Germany]

And the meter, it must be remembered, is 10 decimetres.

One of the great advantages of the metric system is that a litre, as well as being 1kg of water, is also defined as 1 cubic decimetre, which makes converting cm to volume much simpler.

 

[Andy in Germany]

S’cultural, innit! ;-)

It certainly explains why metric measurements were more reality embraced in Europe: it meant your neighbour used the same measurements as you did, so it was much easier for everyone.

Being a relatively centralised Island for a long time has affected the UK in many ways.