Category
Longines Hour Angle
1,690.00 CHF
Catalog price: 5,290.00 CHF
Tax included
Longines Hour Angle. Reference: 628.5240.
38 mm steel box with automatic movement caliber L628.1 with 21 jewels.
Champagne frame with index in Roman numerals and steel hands. Silver central disc rotating independently for synchronizing seconds with a broadcast time signal and rotating bezel engraved for adjusting daily variations in the equation of time.
Saddre sapphire treated anti-reflective. Steel bottom with push button for the opening revealing the movement.
Bracelet in gold steel with buckle pin steel.
The angle The Lindbergh time angle watch was designed by Lindbergh to work with the Weems navigation system, and to simplify the calculation of the time angle from time observation. It is based on simple mathematics: since the Earth rotates once in 24 hours, and there are 360 degrees in a circle, each hour represents fifteen degrees. To understand how this is useful to browsers, consider this: suppose it's noon at your location. All you have to do is calculate the Greenwich time angle for a celestial body, and you have your longitude.
Montre of collector in excellent condition.
Monter guaranteed for two years.
2577
- Box
- Or / Acier
YES - Bracelet
- Steel / Gold
- Clasp
- Jewelry clasp
- Glass
- Sapphire Glass
- Other
- Central seconds
- Certificate
- NO
- Movement type
- Automatic
- Functions
- Years
- Sex
- Unisex
- Condition
- Very good
- Year
- 1990
- Diameter
- 38
Specific References
- Our reference
- 10031193
