Buy a set of RCBS 5-0-5 instead, much more accurate (unless you want to spend a fortune)
Somewhat off topic,
I just read the blog in your link, I know exactly what you mean, my 21yr old has Aspergers and wasn't diagnosed until he was 15-1/2, he was seen twice in junior and early senior school by the school psychologist who was asked to do a report (which we didn't get until he was eventually diagnosed) it was a black and white description of a child with ASD, unfortunately (as we found out) he was told to only do a report and not make a conclusion/diagnosis so of course no diagnosis = no help from the school or LEA.
Almost seven years later little has changed, I've just had a reply to my second formal complaint about the non-provision of any help or services for both him and me (physically disabled and sole carer), they agreed with about 95% of it and changed his care team and care co-ordinator in mid-Jan, 3 months later and we've still not heard from them
