ASD has a very nice instrument for Kappa Number and Brightness measurement which they are featuring at the moment. I encourage you to check it out by either clicking on their button ads or "More" below.
And when you talk to ASD Inc., please tell them you saw their advertisements at Paperitalo Publications.
Riddles by Travis:
A paper company sells reams of paper in boxes of 6, 9, and 20 reams. What is the largest number of reams that cannot be delivered in full boxes?