Digital BW, The Print

all--
grams per square meter is the clearest measurement you can get. when 
we talk about "lbs--pounds" here on this side of the pond, it refers 
to the weight of 500 sheets BASED on a certain size (hence, basis 
weight), or amount of square feet.  For example, 20-lb bond is 20 lbs 
because 500 sheets of 17x22 weighs 20-lbs (and 500 sheets 17x22 is 
about 1300 sq.ft.)
It is true that the two sheets with the same basis weight can feel 
thicker/thinner, this is due the density of the sheet.  So, the other 
question you can ask suppliers is what is the caliper thickness of 
the sheet.
hope this helps one issue anyway, as regards what we paper makers 
call our sheets, well ... ;)
thanks
robert rex

--- In DigitalBlackandWhiteThePrint@y..., Jerry Olson 
<jerryolson@r...> wrote:
> Hi Martin,
> 
{snip}
 
> I just don't understand why manufacturers can't label their papers 
so that their thickness raing means the
> same thing to all people. The ideal paper for me would be a photo 
matte by legion papers that was about
> twice as thick as it is now.  I'm awaiting some eclipse to see how 
I like that with the MIS inks.  I still
> haven't printed a piezo print with the photo matte, but I will 
today.
> Jerry
>