Electrostatic System Physics Kit with 26 Components for 11 Experiments, Carry Case archive-pending supplying the third-color line for

supplying the third-color line for breadboarded circuits already using black and red on the supply rails

Polished hardwood test tube rack holding 12 tubes up to 25 mm across twelve draining pins

and mixed autotrophic-heterotrophic characteristics for protist biology teaching

Hard vulcanized ebonite rod that takes on a strong negative charge when rubbed with fur

Wooden baseboard with millimeter scale

Electrostatic System Physics Kit with 26 Components for 11 Experiments, Carry Case archive-pending supplying the third-color line forElectrostatic physics kit pairs 26 components with 11 experiments on static electricity, charge, and field interactions in a classroom storage case.