Human Urinary Organs Model with Kidney and Bladder, 15 x 9" Waves & Oscillation_Wave Motion Hand-cranked 4-stroke gasoline engine model

Hand-cranked 4-stroke gasoline engine model at 13

levitating above one another when oriented with like poles facing

75-inch height range for bench apparatus

Two-speed ticker timer kit printing 25 or 40 dots per second on paper tape via carbon discs

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

Human Urinary Organs Model with Kidney and Bladder, 15 x 9" Waves & Oscillation_Wave Motion Hand-cranked 4-stroke gasoline engine modelIncludes kidneys, ureters, and bladder in anatomical position, exposing the full urinary tract for combined anatomy and physiology teaching at 15 by 9 inches.