The Aerial Screw is one of Leonardo da Vinci's most iconic drawings - and this fun and exciting project gives budding engineers and designers the chance to create a working scale model which adopts Leonardo's bevel gear to spin the canopy and support structure. The helicopter should take about an hour to make, with all pieces pre-cut and parts pegged for extra strength. Age 9+
Made using natural, untreated wood from sustainable forests.
Completed model size: 38cm x 23 cm.
Box size: 26cm x 19cm x 5cm