Longines Calibre L699 Nstructions For Use page 8

How to use your
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Lindbergh Hour Angle Watch
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I
The Lindbergh Hour Angle Watch designed by
Charles Lindbergh
The original Lindbergh Hour Angle Watch was designed by Charles
Lindbergh as a navigational instrument for airborne pilots. Used in con-
junction with a sextant and the appropriate nautical tables, the watch
allows the pilot to quickly compute the Greenwich hour angle, i.e. lon-
gitude.
It is fitted with a self-winding Longines L699 movement.
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