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Tachymetric Anti-Aircraft systems in WW2 | Hacker News Reader

Tachymetric Anti-Aircraft systems in WW2

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3 points·iamartnez··1 comment

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More info:

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

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

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