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    Re: Pilot watch slide rules
    From: Paul Hirose
    Date: 2020 Jan 2, 23:50 -0800

    On 2019-12-30 15:46, Sean C wrote:
    > But I think the solution would be to look on the tachymeter scale for the 
    total number of seconds elapsed, and then read the number opposite (the 
    seconds scale in reality) as the speed. The number 65 on a [non-rotating] 
    tachymeter scale is roughly opposite the '11' or 55 seconds on a watch face.
    
    I believe you have it figured out. Switch the roles of the scales. Find
    seconds on the tachymeter scale. Opposite that value, read mph where
    you'd ordinarily read seconds.
    
    Wikipedia obfuscates the method with all that stuff about reciprocals
    and apple eating.
    
    I still think the very high values on the tachymeter have no practical
    application. The scale would be more useful if you replaced them with
    55, 50 etc.
    

       
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