Originally Posted by chephy
Yep, a pretty pathetic scale. Surely there must be something better...
OFF TOPIC BUT HILARIOUS: Here is a quote from Wiki's
hardness page: "For the mathematical concept of the difficulty of proving a conjecture, solving an equation, etc., see computational complexity theory. For water hardness, see hard water. For human hardness, see sex."
This thread is fun.
Good find, and glad to have been of service
I'm also glad that the Queen can use studs of any hardness. So to speak...