The National Geographic Magazine, Volume 90National Geographic Society, 1946 - Geography Indexes kept up to date with supplements. |
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Page 136
... watch is made as- sures you the greatest watch value and the finest timekeeping accuracy . CAN A MILLIONTH OF AN INCH be measured ? Or a millionth of a second ? Yes ! Hamilton engineers can easily measure such infinitely tiny dimen ...
... watch is made as- sures you the greatest watch value and the finest timekeeping accuracy . CAN A MILLIONTH OF AN INCH be measured ? Or a millionth of a second ? Yes ! Hamilton engineers can easily measure such infinitely tiny dimen ...
Page 392
... watch to time readings on the theodolite ( mounted on post ) through which the flight of the balloon is observed . From these readings are computed the horizontal speed and direction of the balloon as it ascends . New Frontier in the ...
... watch to time readings on the theodolite ( mounted on post ) through which the flight of the balloon is observed . From these readings are computed the horizontal speed and direction of the balloon as it ascends . New Frontier in the ...
Page 680
... WATCH OF RAILROAD ACCURACY Hamilton's experience building railroad watches and navigational timepieces for our armed forces assures greatest possible accuracy in every size and grade . Incredible human skills , unbelievably precise ...
... WATCH OF RAILROAD ACCURACY Hamilton's experience building railroad watches and navigational timepieces for our armed forces assures greatest possible accuracy in every size and grade . Incredible human skills , unbelievably precise ...
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