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The very first was joegrundman's U-Jagd Tools.
http://www.subsim.com/radioroom/down...o=file&id=4221
It gives all those tools but doesn't change the way the screen looks. All later GUI mods are based on this one.
U-Jagd Tools was based on Hitman's Printable Is-Was, which gives you the parts and instructions to make your own hand-held copy of the one they actually used.
http://www.subsim.com/radioroom/down...do=file&id=323