Rulers by Père Alex

This classic illusion, made famous by psychologist Joseph Jastrow, is elegantly reinterpreted here by Père Alex.

The magician presents two wooden school rulers: one in centimeters, the other in inches.

He explains that the imperial system is decidedly mysterious for a Frenchman... and immediately proves it: when placed side-by-side, 15 cm appears to be equal to 6 inches.

By simply switching the position of the rulers, they not only optically change their size, but this time 7 inches appears to be equal to 9 cm.

Finally, the magician reveals that the two rulers are actually exactly the same length.

A strong, clear, and immediate visual illusion that always elicits wonder and a smile.

Contents:
- A beautiful wooden box, specially made for this effect.
- Two wooden rulers: one marked in centimeters, one marked in inches.
- An instructional video in French, in which Père Alex explains the principle of the trick.