Quote:
Originally Posted by Rupert
To my mind jet engines that work well enough to put into the production aeroplane are one of the signifiers of TL7.
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In 3e yes (1950). In 4e not so much (1940). I'm not sure if anything major other than crude radar marks the 1940 date. IMHO when they changed the TL6 date to 1880 they went too early on that too.