Europeans, Asians, Africans, Indians, etc DO NOT GIVE THIS AWAY!
I realized something while TAing a lab today and I have a question. How many Americans HONESTLY cannot figure out how to measure centimeters with a ruler like the one shown if the top line with the bigger spaces between numbers is labeled "in" and the bottom is labeled "mm". These kids could not understand how many centimeters were between each number labeled on the ruler.
At LEAST half of a college level introductory science class could not understand how to read a ruler to measure something on a map in centimeters.