The Breitling Chronomat manual and some links

The Breitling Chronomat is unique for the circular slide rule. Mine is a bit scratched so here's a nicer photo from Chronomat history as well as this delightfully enthusiastic description:

The Breitling Chronomat with its rotating slide-rule was patented in 1941 as war raged through Europe and other parts of the world, its design offering a welcome respite from the plethora of military and military-inspired watches of the period. The Chronomat's emphasis on engineering and mathematics, science and industry seemed to offer hope for a future when the war would be over and reconstruction could begin.
To summarize the manual for the 'Type 42' circular slide-rule: The Navitimer's 'Type 52' slide-rule is different

Differences in the slide rules: Since the stop watch's second hand extends all the way to the slide rule, I figure there's got to be some method of setting the outer ring so the second hand acts like the cursor of a circular slide rule to point directly to some calculation.
Does anyone have directions for that?

Here's the manual for the Breitling Chronomat sliderule:




other links: