OK what were are really looking at is here are the proportions and how it mates with back armour, in this case FP v3. It all seems to work together with no surprises. I need to get the white section of webbing added next.
So I will be sewing another with the black cotton and the way vintage scuba harness are constructed, with the square and cross stitch design.
The photos do show the X type triglide and I think I will not sew one side of the waist/stomach strap when this used. Will see how that works out.