Spare Charged Porous Pot Category_Anatomy and Life Science 5x clear views through a

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

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

Fitted with a wide-grip handle and tapered pouring spout

Aluminum-handled collecting net swings lightweight through tall grass and air sweeps for classroom field trips and introductory entomology sampling work

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

Spare Charged Porous Pot Category_Anatomy and Life Science 5x clear views through aSpare 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.