The Professor's hexagonal, ply covered, deep flat sided fuselage tapered strongly aft. The pilot sat in an open, unscreened cockpit immediately ahead of the pedestal and equipped with the variometer. A rubber sprung skid on the underside reached from the nose to below the trailing edge. It had an all-moving tailplane, with an almost unswept leading edge but strongly curved aft, producing a pointed surface. Above it there was a short triangular fin, reaching back to the trailing edge of the tailplane, carrying a taller, full rudder with a straight, sloping edge but rounded top and heel. The rudder projected below the fuselage but was protected on landing by a small tail skid. The tail surfaces were all fabric covered behind the ply leading edges.
