Half Ebonite / Half Brass Friction Rod, 0.5 x 12" Lab Supplies_Filtering Supplies Dual-screw adjustment on a heavy-duty

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

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

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

Meker-style natural gas burner delivers a broad

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 Dual-screw adjustment on a heavy-dutyTwelve 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.