In metric units what is the thickness of a dime, the width of a little finger, and the length of one big step?

http://www.google.com/search?as_q=&hl=en&num=10&btnG=Google+Search&as_epq=thickness+of+a+dime&as_oq=&as_eq=&lr=&as_ft=i&as_filetype=&as_qdr=all&as_nlo=&as_nhi=&as_occt=any&as_dt=i&as_sitesearch=&as_rights=&safe=images

http://www.google.com/search?hl=en&lr=&as_qdr=all&q=%22width+of%22+%22little+finger%22++metric&btnG=Search

http://www.google.com/search?hl=en&lr=&as_qdr=all&q=step+meter++metric&btnG=Search