The Lindbergh Hour Angle is a timeless treasure in Longines' collection. Created in the 1930s by Longines and Charles Lindbergh, also known as 'The Lone Eagle', it was an improvement on the Weems Second-Setting Watch, designed by Longines/Wittnauer and Captain Phillip Van Horn Weems in the 1920s. The former not only had a rotating inner seconds scale for precise time synchronization with radio signals (a big deal back then!), but also intricate markings on the dial and bezel for calculating the hour angle. This transformed the simple watch into a handy navigation tool for determining longitude. The current Lindbergh Hour Angle by Longines pays homage to the original, with a similar case