Brian Holcombe
Thanks AZ, what I ended up doing was scribing the back of the slab, then scribing the front taking into account the change in dimension.

As a double check I used my winding sticks and a double square to measure against my bench to ensure that I was accurate. I also checked the face for wind when all was said and done.. I find it very hard to scribe accurate dimensions on a live edge slab at some junctures (depends on how the edge goes), so I like to double check.

The finished dimension on the front edge is 1.5"~ The current trend is for very thick slabs, but personally I prefer the appearance of 8/4 thicknessed to 1.5" or 1.75". Once they get to 2" or 2.25" they appear very heavy, IMO.