You article is very clear on what one can use the EM-10 for.
I believe it was this APUG thread that arose my interest in a possible inexpensive way to save paper, so I went to Ebay and there was this EM-10 on auction.
I did a Google search and found on this first page this Polish site, and due to my knowledge of Polish I downloaded an English document: (-:
Nice explanation on how to use the EM-10
Printed it, studied the graph, made sure the salesperson would ship internationally and bingo - buy it now - $23 incl. shipping...
I usually wait to the end of an auction - I'm a proud sniper, but sometimes making sure one get the goods is worth more than a few dollars.