quote:in a real-life situation it gave a calibration factor that deviated from that derived from a 400-m course by only negative 0.008%.
Neville,
In the data you showed, it deviated by 0.03% to 0.06%, or 30% to 60% of the SCPF, correct? I didn't see your example where it deviated by only 0.008%.
I gave a practical reason why I think the accuracy of this technique might be limited. I don't think you can take measurements with precision less than say, 30% of the SCPF. But with a Jones counter and a 300m course I think your precision is only about 20% of the SCPF, so not a big difference. I was mostly making the point that I think you will need to have a lot of accurate marks on your rim to make the technique work.
I was not trying to say it's impossible for the technique to work. I'm still planning to try it.