Half Ebonite / Half Brass Friction Rod, 0.5 x 12" Lab Supplies_Filtering Supplies sized so that students can

sized so that students can charge an outer pail and watch the inner pails register zero charge during the classic ice-pail demonstration

Adjustable height from 3 to 16 inches distinguishes this polished hardwood single-funnel stand

Snap-apart 2-inch ceramic bar magnets in a 10-pack

Dual-screw adjustment on a heavy-duty spring-loaded three-finger jaw opens to 2

Used to draw electrons from glass and ebonite rods during rubbing

Half Ebonite / Half Brass Friction Rod, 0.5 x 12" Lab Supplies_Filtering Supplies sized so that students canTwelve inch friction rod machined half from ebonite and half from brass, generating opposite charges along its length to compare negative and positive triboelectric behavior side by side.