Fuel Economy MPG/KPG/KPL

[jtopiso_imp]

If you stretch it a bit we have five - Sweden uses the "mil" which represents ten kilometers. The Swedish "mil" started off 1699, representing 6000 fathoms or 10,7 km. The "mil" was 1/2 of the king's stipulated max distance to between inns with horses for change etc. The "mil" survived when Sweden finally went metric in 1899, but was adjusted accordingly to signify 10,0 km. To this day we tend to talk about travelling distances in "mil" rather than kilometers.

The French came up with the most logical solution: get rid off kings, and with their eccentric units based on their anatomy, their state of mind or the strength of their horses.

Then you go to the UK, and your vehicle shows your fuel economy in MPG, but you refill in liters :-?

(Although I have to say, when you work in mechanical design and you need precision, "imperial bolts" beat any metric standard.)

lol - I don't understand what that means.

lol - I don't understand what that means.
Perhaps he means that there are even finer treads available in imperial bolts than in the fine metric treads ?

lol - I don't understand what that means.
Perhaps he means that there are even finer treads available in imperial bolts than in the fine metric treads ?
Is not only the finer threads: for the same diameter, on metric standards usualy you have several options for the length, in 5mm increments. On Imperial, you have increments in 1/16" (approx 1.6mm).

So you can get your "grip length" matched to your assembly without too much or too little protrusion.

For example: google "NAS Bolt 1306". You will see that thread length is always the same for a particular diameter. But for "grip length" (i.e the "shank" part) you have endless options.