[Odonata-l] measurement

[Andy Brazil]

Perhaps we could experimentally discover individual biases in measurements?
If we had a scan of a dragonfly together with a scale rule posted on the
web, we could invite people to make the measurements as they usually do* and
post the results?  We could then determine the variation.

Andy Brazil

(*By measuring the image manually, using calipers or rule, rather than using
a digital method - then measure the scanned rule to find a scale factor for
an individual's monitor - thus reproducing field conditions)