Ceramic Ring Magnet, 1.375" OD x 0.75" ID, 5-Pack Lab Equipment_Power Supplies Large frog dissection model with

Large frog dissection model with numbered structures reveals digestive

Hand-painted enlarged eye model separates into six parts

Reproduces Ewald von Kleist's 1745 charge-storage device with concentric metal cups around a plastic dielectric

Glass convex mirror at 100mm diameter and 150mm focal length

hand-painted detail for blood-flow teaching

Ceramic Ring Magnet, 1.375" OD x 0.75" ID, 5-Pack Lab Equipment_Power Supplies Large frog dissection model withFive ceramic ring magnets at 1. 375 inch outer, 0. 75 inch inner, and 0. 3125 inch thickness, sized to stack on a vertical rod for like pole repulsion levitation demonstrations.