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Tachymetric Anti-Aircraft systems in WW2 (youtube.com)
3 points by iamartnez 4413 days ago
1 comments
iamartnez 4413 days ago
More info:

http://en.wikipedia.org/wiki/Kerrison_Predictor

http://en.wikipedia.org/wiki/Tachymetric_anti-aircraft_fire_...

link