Adam Tokilski is the world authority of wing morphometry and http://www.coloss.org/beebook cites Drawwing as the gold standard. Adam was a great help.
The wing morphometry turned into a bit of a team effort. For each hive we took 30 young worker bees (this takes some skill) and took a digital microscope photograph of the right forewing of each bee and posted the image on dropbox where they could be accessed by the team.
One of 30 right forewings from a pure Amm Manx sample ( courtesy Harry Owens.)