A. Lange & Söhne

Monochrome just posted an amazing review of the 1815 Chrono. It's one of the first articles I have seen that goes in-depth explaining exactly how the chronograph functions. It's a very interesting read... https://monochrome-watches.com/a-lange-sohne-1815-...  

Thanks for sharing. That pic shows how incredible this brand is...the movements are spectacular.

I learned the hard way its difficult to write about such complications. They did a great job for what it is... One little irk is that the photos they posted, the column wheel looks a little dirty. Regards, skyeriding