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

25-inch base raises a magnetic needle to a 4

5 inch plastic case

providing the high-turns winding for transformer ratio and electromagnetic induction demonstrations

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.