Unfortunately in India it's generally Fahrenheit as well, independence from the British didn't remove that piece of the imperial system (in length it's even more confusing where shorter measures feet and inches are preferred while for longer once m and km...).
Indians generally use Fahrenheit only for body temperature... to know if we're running a fever. But off-hand, I'd have no idea what an air temperature of 113 degrees Fahrenheit would feel like. I understand 45C quite easily. Surely you've seen weather reports and forecasts in Indian newspapers and on Indian TV. Did you ever see them use Fahrenheit?
For distances, a person's height is measured in feet and inches, tailors prefer to use inches for their dimensions, plots of land are often measured in feet. But everything else is metric. (Listen to the local farmer speak, in your own vimeo video link.) Speedometer, odometer, fuel, grocery, produce, etc. all use the metric system. To say nothing of my entirely-metric work in engineering.
Yes, you're absolutely right and most Indians seem far more literate in converting between the two than I ever would be. My generalization was way too broad and wrong - thanks for pointing out the specific cases.
It seems like, as with the examples you give, that certain systems are used for certain purposes which was always fascinating to me come from outside. In construction, in rural areas I've found it varying between different parts of the country whether metric or imperial is preferred.
