Set of 25 Rocks & Minerals, Cardboard Box Item Type_Shot Glass Die-cast body with plated brass

Die-cast body with plated brass parts anchors this cork-lined two-prong universal clamp

Round convex glass mirror for physics optics experiments in reflection

the curved-face geometry letting beams enter along any radius for clean Snell's law angle work in ray-box and refraction setups

and momentum-collision setups where a mid-size projectile is needed

sized to read single-cell and small-battery-pack voltages without scale-overshoot risk

Set of 25 Rocks & Minerals, Cardboard Box Item Type_Shot Glass Die-cast body with plated brassSet of 25 Collection of different minerals and rocks collected from different places. Set of 25 Collection of different minerals and rocks collected from different places, supplied in cardboard box. Each specimen labelled with name.