Standard Rheostat, Model B Material_Polypropylene fanning apart visibly when a

fanning apart visibly when a charged rod approaches to demonstrate electrostatic repulsion and induction

the lower-resistance higher-current option in the compact-tube rheostat line

Used to map the magnetic field around a circular current loop

transmitting maximum light when their axes align and nearly extinguishing it when crossed at 90 degrees

Nine-piece stainless steel hooked weight set spanning 10 to 1000 grams in a polished wooden storage block

Standard Rheostat, Model B Material_Polypropylene fanning apart visibly when aStandard rheostat with oxidized constantan winding on a vitreous enameled steel tube and a heavy duty sliding contact, supplied with three binding posts for rheostat or potentiometer wiring.