Using tachymeter of Tag heuer link calibre 36

[ajay761]

Hi Guys, I had recently bought a Tag heuer Link calibre 36. I have never used a chronograph before. Plz tell me how to use its tachymeter ?

[Anonymous]

over a measured mile, start the chrono at the begining and at the end of the mile stop it , that will tell you how fast you were travelling ,far better than looking at the speedometer...dont you think ?