I've received today an EM10 enlargement meter I've purchased at Ebay.
Here are the first impressions:
I did not use it as per Ilford instructions - nor did I purchase it intending to.
I used it as per:
One measures the higlights (equivalent to expose to the shadows) and get an approximate value of paper grade/filter from the graph.
The main difference was, that in my case, exposure was not as suggested in the graph - 9s at a reading of 90 in the dial, but
I feel that with more tests, it will be a very helpful tool.