Red Molecular Model Atom, 1.5cm, 1 Hole, 10-Pack Graduations_50mL Twenty-six-piece borosilicate glass gas preparation

Twenty-six-piece borosilicate glass gas preparation kit assembling flasks

wheel-and-axle

Life-size articulated lower-limb skeleton pairs femur

Entry-level two-part human skull model separates the skull cap to reveal the cranial cavity for introductory head-anatomy teaching at secondary and college levels

Mounted on a metal base with lenses fixed in their working positions

Red Molecular Model Atom, 1.5cm, 1 Hole, 10-Pack Graduations_50mL Twenty-six-piece borosilicate glass gas preparationTerminal one hole red atoms in a 10 pack at 1. 5cm diameter, conventionally representing oxygen at a bond terminus in molecular model structures.