Rolex Datejust steel / white gold automatic Kal. 1570 Ref. 1601 On Sale
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Brand : Rolex
Model : Datejust
Type : men's watch
construction : ~ 1969
Functions : date,
Mouvement : automatic
Movement/Caliber : 1570
Clockwork number : D965xxx
Case number : 2335xxx
Reference number : 1601
Case material : steel / white gold
Glass : acrylic glass
Clock face : silver
Accessories : pictured original Rolex box
Clock face : very good condition with minimal traces of use
Glass : very good condition
Case : good condition
Case back : good condition with traces of use
Bracelet : good condition
Movement/Caliber : fully operational / checked for performance, authenticity and functionality
Diameter : 36.00 mm
Height : 11.50 mm
Lug width : 20.00 mm
Bracelet material : steel
fits up to a wrist of : 200.00 mm
Clasp : original Rolex flip clasp
Description : Original Rolex steel bracelet. You can determine your wrist size by measuring the inner length of your watch strap with the buckle closed.
NASA To Launch Deep Space Atomic Clock For Precise Timing Off-World
Image Credit: NASA/JPLNASA’s Deep Space Atomic Clock (DSAC) is one of the most important timing instruments ever developed, and it will serve as a foundation for long-distance travel and communication off our home planet, Earth. How accurate is it? Accurate to one second every 9,000,000 years. Having said that, understanding the larger importance of precision timing instruments requires education in a number of areas, including physics, navigation and, of course, horology. For example, it is not obvious to many people that a precise clock is necessary for precise navigation. Also, many people don’t immediately appreciate that the effects of relativity change how the measurement of time is experienced in two different points in space. Suffice it to say that long-distance space travel and communication require extremely precise, local timing machines.Image Credit: NASA/JPLAtomic clocks (history on best watches here) are the most precise form of timing instruments currently kn
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