I saw this over on "Boy's Own Adventure" http://boys-own.blogspot.com/
The imperial system has much to recommend it. Linguistically it is pleasant. Rather than everything starting with deci-, kilo-, or centi-, and ending in -er, there are many different old words, that tell of times past. In metric all distances end in -metre, but imperial has inch, foot, yard, chain, pole, furlong, mile, and league. The numbers these divide into are nice convenient ones, like 3, 12, 16, 36, 220, and 1760. The sizes of these units are convenient too. Estate agents still prefer to measure rooms in feet, because this is the right size of unit for the job. My shoes happen to be one foot long, so I can pace out a room very accurately, and someone with slightly larger or smaller feet could soon learn how much gap to allow for the difference. In metres, rooms tend to seem exaggeratedly different or similar in size, because there is so little variation in the first numbers. For this reason, architects and set designers in Britain and I believe elsewhere in the world have adopted a metric foot (one third of a metre) for working in. Similarly, a person's height is conveniently measured in feet and inches. Less than five foot is short, over six foot is tall, and there are twelve gradations in between, which makes estimating height very easy. In metres, everyone is one-metre-something. The British climate suits Fahrenheit more than centigrade, because there is not much variation in the latter.