Richard Clark wrote:
On 9 May 2007 23:29:28 -0700, Jim Kelley wrote:

Ok. But what I was asking is what does any of that have to do with a
bolt?


The travel of one turn of a point at the radius (helical distance) in
relation to the travel of the same point in the depth (the linear
displacement after 360 degrees of the turn) is related to pitch. A
simple mechanical relationship. This is the bolt.

Thanks so much, Richard. I'm going to keep this on file somewhere in
case I ever forget what a bolt is. :-)

73, ac6xg