Hand-Crank Van de Graaff Generator, 100,000V Biology Ratchet-stopped nickel-plated brass 25 mm

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

this 2-pack of 20oz Griffin-shape borosilicate beakers adds a pouring spout for everyday home use

Diamond lattice kit with 39 carbon atoms and 60 connectors for building the tetrahedral covalent network that gives diamond its exceptional hardness and optical properties

exposing the full urinary tract for combined anatomy and physiology teaching at 15 by 9 inches

Hand-Crank Van de Graaff Generator, 100,000V Biology Ratchet-stopped nickel-plated brass 25 mmHand cranked to convert mechanical work into electrostatic energy, this Van de Graaff generator delivers spark producing high voltage demonstrations in the physics classroom.