Probably one of the most sought-after Breitling models is the Navitimer ref.806. However, not everyone (or every owner) knows how to use all the information on the dial in combination with the slide rule. Bill Sohne, a well known collector who’s active on the internet for years now, and Chuck Maddox (the ?ɬºber Chronograph-meister) put the original manual online of the vintage Breitling 806 Navitimer APOA.

It describes perfectly how to perform calculation with this watch, using the slide rule. Click here for the online manual.
Scan of the manual below by Bill Sohne and published by Chuck Maddox.

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Robert-Jan Broer
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Robert-Jan Broer

Founder & Editor at Fratello Watches
Robert-Jan Broer, born in 1977, watch collector and author on watches for over a decade. Founder of Fratello Watches in 2004.
Robert-Jan Broer
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