Longines Lindbergh Hour Angle Watch
Celestial-navigation pilot's watch co-developed with Charles Lindbergh, produced from 1931.
2 references
“Differs” marks a spec with different recorded values. — means not recorded.
| Spec | Lindbergh Hour Angle Watch, original 1931 production | L2.678.4.11.0 Lindbergh Hour Angle Watch, modern reissue |
|---|---|---|
| Case size | 47.5 mm | 47.5 mm |
| Thickness | Not recorded | 16.3 mm |
| Case Differs | sterling silver, round | stainless steel, round |
| Bezel Differs | silver rotating, calibrated for hour-angle navigation | stainless steel bidirectional rotating |
| Crystal Differs | acrylic | sapphire |
| Water resistance | Not recorded | 30 m |
| Caliber Differs | 18.69N | L699 |
| Movement maker Differs | Longines | ETA |
| Movement type Differs | Manual | Automatic |
| Jewels | Not recorded | 24 |
| Frequency | Not recorded | 28800 vph |
| Power reserve | Not recorded | 42 h |
| Dial Differs | silvered | white lacquered |
| Indices Differs | Breguet numerals with 15-degree hour-angle scale | Breguet Roman numerals with hour-angle scale |
| Hands | Breguet, blued | Breguet, blued |
| Bracelet | leather strap | leather strap |
| Produced | 1931–1935 | Not recorded |
| Limited edition | approximately 2,000 pieces | Not recorded |