TIL that the Norden Bombsight used by US Bomber aircraft in WWII cost $1.1 billion to research and produce, about half as much as the Manhattan Project and over a quarter of the cost of all B-17 bombers manufactured. While successfully precise in Stateside testing it was far less accurate in combat.

https://en.wikipedia.org/wiki/Norden_bombsight
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1adylrb/til_that_the_norden_bombsight_used_by_us_bomber/