You'll see in the coming issue of the Torque Roll a mention of some recent work based on the Hooptee Pitch Gauge as described in a Model Aviation article by the late John Kilsdonk. John Byrne has recreated the design and it is now available. The original article and the PDF of the new work is available on the NCLRA website in the "Helpful Programs" link.
http://www.NCLRA.orgRegards,
Bill Lee