What a Blast!
If the power of the atomic bomb that devastated Hiroshima at the end of World War II is represented by 1 inch, how long of a ruler/measuring device would be required to show the power of the most powerful nuclear weapons?

Answer: About 83 feet.

Calculation: According to NASA, H-bombs have been exploded which were 1000 times more powerful than the one dropped on Hiroshima. 1000 inches / 12 inches per foot = 83 feet.