Measure Your Finger Using String David Yurman David Yurman What you’ll need: string (or floss), a ruler or measuring tape and sharpie/pen. 1. First, grab a piece of string. (Floss works too.) Be sure ...

The piston rings have three major roles - to seal the combustion chamber, clean the cylinder wall and create a very thin layer of oil on it in order to minimize friction. Each ring has gap, which ...