oksymoron:
I thought the ruler was a sort of cheating.
WGT have never condemned the ruler software as cheating, it has been hotly debated a number of times on here. Those of us in the purist camp don't think much of it, preferring to rely on our own judgement or judgement assisted by tape, bits of paper etc.
The other camp sees no wrong in it.
I'm kinda in between to be honest, I spent a bit of time on making a copy meter out of card which balances precariously on my monitor under the real meter a la Yancyman.