Great link/price, I have been looking also. But maybe I am being obtuse the scale on the left is the specific gravity scale, how come the lines don't add up to 1.070? the scale should go up to 1.090 to match the number of lines in increments of .001. Maybe it explains it in the destructions?
I'm sure this is the one that is in all the magazines for $50.00 so it has to be right.