3-Part Human Ear Model, 3X Enlarged, 29 Features Subcategory_Wave Motion Ratchet-stopped nickel-plated brass 25 mm

Ratchet-stopped nickel-plated brass 25 mm micrometer screw gauge reading to 0

polished with ground edges for image-formation experiments in introductory optics

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

Beaker-themed beer pong set includes 12 polypropylene 500mL beakers and 2 pong balls for chemistry-themed party gameplay

producing oxygen's characteristic emission lines for spectroscope viewing of atomic-emission and quantum-energy levels

3-Part Human Ear Model, 3X Enlarged, 29 Features Subcategory_Wave Motion Ratchet-stopped nickel-plated brass 25 mmTwenty nine labeled features across outer, middle, and inner ear sections support detailed auditory anatomy teaching at 3x enlargement for classroom visibility.