This classic illusion, made famous by psychologist Joseph Jastrow, is elegantly revisited here by Père Alex.
The magician presents two wooden school rulers: one marked in centimeters, the other in inches.
He explains that the imperial system is decidedly mysterious for a Frenchman… and immediately proves it: placed side by side, 15 cm appear to be equivalent to 6 inches.
By simply reversing the position of the rulers, not only do they visually change in size, but this time 7 inches seem to correspond to 9 cm.
To conclude, the magician reveals that the two rulers are, in fact, exactly the same length.
A strong, clear, and immediate visual illusion that never fails to provoke amazement and smiles.
Contents:
- A beautiful wooden box, specially crafted for this effect.
- Two wooden rulers: one marked in centimeters, one marked in inches.
- An explanatory video in French, in which Père Alex explains the principle of the trick.
