Yardsticks in Aus are done on results not measurement. When a new class comes along a yardstick is negotiated then refined as the results come in.
The pdf attached has a lot of good info including which yardsticks are reliable.
Darryn
Mozzie
1782
Last edited by Darryn; 11/05/09 04:11 PM. Reason: lin didn't work so attached file
