E.g. IKEA cabinets are 60cm wide, and so are most appliances like fridges. Double-wide things are 120cm etc. Pre-cut lumber is sold by 120cm lengths, sheetrock is 120x240cm etc.
All the easy division, plus the fancy units.
The number of Ikea things that you can mash together and have work is awesome.
With brexit, it should be easy for the brits to lead the charge.
I for one welcome the day when all the dimensions of all manmade objects are either products of numbers in the set {5, 3, 2, 1} or the set {1/2, 1/3, 1/5}. It will drastically simplify real world long division and factoring, and also lead to tighter packing of shipping containers.
Knowing apple, they’ll screw it all up when they drop some port and shrink some device from 1/6000 to 1/6001 thick.
1 litre of water weights 1 kilogram and fills a 10cm cube to its brims. At 0 centigrade, it freezes, and at 100 it steams.
Let’s try imperial units.
1 gallon of water weighs 8.34 pounds and fills 6.8in cube to its brims. At 32 farenheit it freezes and 212 it steams.
Yuck!