Useful for insect collecting!
This nylon insect net extends from 18″ to 32″ with a 48″ long conical net is mounted on a 14″ ring.
Memory wire, 1 ft. Beaker not included.
This new model comes with a sturdy cast metal base, testing spring, metal scale, four 20-gram weight...
Lets your students actually observe increases and decreases in a liquid's conductivity!
These solar cells are used to power small motors and other devices which draw small amounts of curre...