On Aug 21, 2:55 pm, ryanglover1969 wrote:

Very interesting indeed!

Blather aside, I'm thinking that the tool in question is a waviness
gauge such as the one I made for checking plugs and molds:

http://www.hpaircraft.com/hp-24/upda...october_04.htm

My experience, backed by template checks on a variety of sailplanes,
is that getting the waviness below .004" is a lot more important than
making the airfoil exactly match the intended contour.

Thanks, Bob K.

http://www.hpaircraft.com/hp-24