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John Naber John Naber em 2016 Natação Nome completo John Phillips Naber Estilo 100m e 200m costas, 200m e 4x200m livres e 4x100m medley Nascimento 20 de janeiro de 1956 (63 anos) Evanston, Illinois Nacionalidade  Estados Unidos Compleição Peso: 88 kg Altura: 1,98m Medalhas Jogos Olímpicos Ouro Montreal 1976 100 metros costas Ouro Montreal 1976 200 metros costas Ouro Montreal 1976 4x200 metros livres Ouro Montreal 1976 4x100 metros medley Prata Montreal 1976 200 metros livres Campeonatos Mundiais Bronze Belgrado 1973 200 metros costas

3 $begingroup$ This is a tool (probably) in on an ultralight airplane. Initially I guessed that it is a tilting meter (to level between right and left), but seems it is not as it just a vertical tube filled up with something like liquid. So, what is that and how does it work? aircraft-design flight-instruments ultralight share | improve this question edited 18 mins ago Notts90 2,092 3 16 38 asked 6 hours ago AirCraft Lover AirCraft Lover 516 1 13