>From what I can see of the pictorial and read from the caption, two shackles
are used when the shackle arm does not fit through the eye nut, but the
shackle clevis pin does. Where the shackle arm fits through the eye nut,
only one shackle is needed.
> In a message dated 7/30/02 3:01:03 PM Pacific Daylight Time,
> > Why are two shackles needed? Is there some reason that the
> grip thimble
> > could not be slipped over the shackle and then the shackle pin
> put in the
> > tower plate or anchor rod? Am I overlooking something obvious?