A. Lange & Söhne Lange 1815 Up/Down Archived and Aldrin and Armstrong had

and Aldrin and Armstrong had to act fast if they were to complete the mission

The only difference was what beat inside the Oyster cases—generic Swiss ETA movements rather than the calibres that Rolex designed in-house

this is done by some combination of providing the timepiece with a transparent dial and/or by removing material from the movement’s bridges and other parts such that the constituent components are visible

three companies manufactured chronographs to the pilots of the Royal Navy and the Royal Air Force: Hamilton

also serving as a semi-quickset date function

A. Lange & Söhne Lange 1815 Up/Down Archived and Aldrin and Armstrong hadBorn in 1815, Ferdinand Adolph Lange received a rigorous education at the hands of nurses and governesses. At 15 he became a student at the Saxon Technical school in Dresden. Following that, he pursued training under Johann Christian Friedrich Gutkaes, Sr, royal clockmaker to the King of Saxony. In 1846 he and his brother in law formed A. Lange & Shne. Langes use of precision tools and instruments allowed the manufacture to attain a level of precision