| Notes |
Illustrating a wing partially covered with sheet balsa, wing construction using sheet balsa leading & trailing edges and box spar, using heavy leading & trailing edges and "I" section main spar, using solid edges "T" section main spar, built-up wing ribs, part of wing for petrol-driven model using thin bamboo, use of corner blocks, Warren bracing between spars, forming dihedral angles, plug-and-socket method of wing joining, tongue-and-socket method, system of clamping wings with rubber bands |