Marbulous Marble Run Set of 121 Pcs Head Options: Monocular Head (XSP330M):

Head Options: Monocular Head (XSP330M): Inclined at 30° and 360° rotatable

Volume locking mechanism & superior accuracy and precision for critical applications

Students can even visually determine wavelength

This feature allows for precise control and delivery of oxygen during resuscitation procedures

making it suitable for various laboratory and industrial uses

Marbulous Marble Run Set of 121 Pcs Head Options: Monocular Head (XSP330M):Included: Marbulous Marble Run Set of 121 pcs with Pamphlet with sample mrble runs to build. Size of assembled game: 98x22x77cm Breathtaking drops, cool spinning wheels, & lots of twists and turns. Help teach children about other cultures in a fun and inventive way, while at the same time teaching them basic skills like hand eye coordination and spatial reasoning. Attractive and familiar elements that fit easily together. Perfect for Designing &