Pathfinders Da Vinci Helicopter knife An enduring classic that will

An enduring classic that will withstand generations of play

A herbal liquid concentrate providing powerful cleaning performance whilst retaining a gentle action to ensure optimal fabric care

*  Mud guards

with a design that is one of the most successful of all time

Pathfinders Da Vinci Helicopter knife An enduring classic that willLeonardo da Vinci developed concepts for a giant air screw late in the 15th century. This working model uses a bevel gear, also from his drawings, to spin the canopy and support structure, illustrating the way Leonardo thought flight might be possible. A fun and inspiring project from one of the greatest minds of history. Easy to make from pre cut and pre drilled sustainable timber. Finished model size is 38cm high by 23 cm wide.