Hand-Painted 3D Starfish Sectional Anatomical Model on Base, 18 x 16 inch Light & Optics_Spectroscopy Copper-block plug key switch with

Copper-block plug key switch with two 4mm terminals and a removable plastic-guarded plug

Graphite lattice kit whose atoms and connecting rods assemble into planar carbon sheets

Fullerene C60 kit with 60 atoms and 90 bonds for building the spherical cage structure characteristic of fullerene carbon allotropes

Labeled-terminal 50-ohm resistance unit at 7

Open back reveals spine and posterior musculature while the head section preserves upper-body context

Hand-Painted 3D Starfish Sectional Anatomical Model on Base, 18 x 16 inch Light & Optics_Spectroscopy Copper-block plug key switch withThree dimensional starfish sectional model reveals echinoderm anatomy, water vascular system, and radial symmetry for marine biology teaching.