Longines
Lindbergh Hour Angle, 1931
Why It Matters
A navigation instrument for the wrist. Charles Lindbergh designed this watch with Longines in 1931, extending Captain Weems's second-setting idea, to help aviators read the hour angle of a celestial body at Greenwich and so fix their longitude. The original is a large 47.5mm sterling silver watch on the hand-wound calibre 18.69, with a rotating bezel and a dial marked in degrees, since the earth turns fifteen degrees each hour. This is the 1931 original, not a modern reissue.
Object Details
- Brand
- Longines
- Family
- Hour Angle
- Model
- Lindbergh Hour Angle (1931 original)
- Reference
- Lindbergh Hour Angle (1931 original)
- Production
- 1931
- Case
- 47.5mm
- Material
- Sterling silver
- Movement
- Hand-wound Cal. 18.69 N.S.C.
- Dial
- Hour-angle navigation dial; degrees and arc; rotating bezel
- Complication
- Hour-angle navigation (Weems-type)
- Bracelet
- Leather strap
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