6-Piece Acrylic Prism and Lens Set with Wooden Storage Geology_Geology Charts & Models demonstrating mechanical-to-electrical energy conversion as

demonstrating mechanical-to-electrical energy conversion as the crank lights the bulb

supporting small-feature eye anatomy teaching

showing the hexagonal bonding within each layer and the weak bonding between layers

Cutaway working steam engine model with piston

Two rectangular slots accept square or round rods up to 16 mm in this aluminum alloy multipurpose clamp holder

6-Piece Acrylic Prism and Lens Set with Wooden Storage Geology_Geology Charts & Models demonstrating mechanical-to-electrical energy conversion asSix piece transparent acrylic prism and lens set with all faces polished, packaged in a wooden storage box, covering core dispersion and refraction shapes for ray box optics work.