63-Piece Worcester Electrical Circuit Board Kit Science Classroom Decade capacitance box stepping from

Decade capacitance box stepping from 100pF to 1000pF in 100pF increments at plus-or-minus 5% on 63V

5 by 4-inch ventilation apparatus modeling historic mine-gallery airflow and domestic chimney convection through a candle-driven hot-air-rise demonstration

deflecting visibly in the presence of a charged object to reveal both charge presence and polarity

vertical graduated tube

Graduated white screen mounted for use on the optical bench

63-Piece Worcester Electrical Circuit Board Kit Science Classroom Decade capacitance box stepping fromHard plastic 13x13 inch Worcester circuit board with 12 metal poles and 4 banana terminals, the foundation for student built series parallel circuits and electromagnetic induction demonstrations.