Optical Lens Set, 2", 6-Piece, Convex and Concave Material_Polypropylene Aluminum 40cm precision force table

Aluminum 40cm precision force table with tapped pulley positions and central ring assembly for resolving and composing force vectors under equilibrium conditions

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

3 glass Griffin-form beaker shot glasses hold 3

Hooke's Law

Half-size digestive system model fits smaller class benches while preserving the full esophagus-to-rectum path and accessory organ anatomy in two removable parts

Optical Lens Set, 2", 6-Piece, Convex and Concave Material_Polypropylene Aluminum 40cm precision force tableSix lens optics set of three double convex and three double concave glass lenses with ground beveled edges, designed for image formation and focal length investigation.