The glass ball is hollow and when partly or wholly filled with water, becomes a magnifying glass. Reductions in image sizes are created if held under water.
Recommended for 9+ yrs.
Instructions, explanations, and suggested experiments in English and French.
Winner of the german Spiel Gut award.
6.5 x 6.5 x 4.5 cm. Weight 41 grams.
Made in Germany.