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Re: Strange chronograph timers. What are they for?

: eBay item number:132502866322
: JAEGER RARE CAR DASHBOARD CLOCK VINTAGE OROLOGIO CRUSCOTTO AUTO

That is a log scale as used for a circular slide rule. The only reason I can dream up for having just one half of a working slide rule and no minutes/hours markings is that it is used to measure something that is going to be plotted directly out on a log scale. Just a wild guess....

: ebay item number 112807971039
: VINTAGE JAQUET RACING CHRONOMETER

This video explains it -- a 1/100th second chrono. https://www.youtube.com/watch?v=C0q8KaeldKg

Mike

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Strange chronograph timers. What are they for?
Re: Strange chronograph timers. What are they for?
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