Spare Charged Porous Pot Category_Anatomy and Life Science Built from two counter-rotating foil-sectored

Built from two counter-rotating foil-sectored plates with a belt drive and a pair of Leyden-jar condensers

Used to measure induced EMF as a magnet falls through a 100-turn coil on a 15mm acrylic tube

5x clear views through a 3-inch optical-glass lens with a 6-inch focal length

Fitted with a wide-grip handle and tapered pouring spout

Hand-cranked worm-and-wheel drive with a rotation dial between clear acrylic plates

Spare Charged Porous Pot Category_Anatomy and Life Science Built from two counter-rotating foil-sectoredSpare charged porous pot for the Leclanche cell, supplying a 1. 5V replacement element so wet cell demonstrations stay running once the original electrolyte loses charge capacity.