![Laughing :lol:](./images/smilies/icon_lol.gif)
Metric, I hope not. This is again the experts foisting onto people something that the don't want and is not a 'natural' form of measurement when dealing with fractions. In addition, speaking as an engineer, the experts failed to understand that accurate measurement in 'Thous' is significantly easier than hundreds of Mills.
Some years ago I hired an architect to produce some drwings for a planning application, the drawings showed a structure in thousands of millimetres and accurate to one millimeter!
I suspect he was better at drawing than building!