Enigma machine (http://en.wikipedia.org/wiki/Enigma_machine). I don't know the background to the precise choice of keyboard layout but it seems to be a variant on QWERTZ (http://en.wikipedia.org/wiki/QWERTZ) which makes sense given the original users.
Not a standard modern German keyboard layout http://en.wikipedia.org/wiki/German_keyboard_layout but the users may not have been touch typists so it didn't matter!
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(no subject)
Date: 2013-01-24 03:07 pm (UTC)(no subject)
Date: 2013-01-24 03:44 pm (UTC)(no subject)
Date: 2013-01-24 03:49 pm (UTC)(no subject)
Date: 2013-01-24 04:30 pm (UTC)what's your message?
(no subject)
Date: 2013-01-24 04:58 pm (UTC)(no subject)
Date: 2013-01-25 01:44 am (UTC)(no subject)
Date: 2013-01-25 04:41 pm (UTC)(no subject)
Date: 2013-01-26 09:21 am (UTC)but the users may not have been touch typists so it didn't matter!