Parallel and Series Circuit Demonstrator Pack Size_5 Five color-coded ceramic ring magnets

Five color-coded ceramic ring magnets at 46mm diameter mount on a 15cm wooden dowel

supplying replacements when the originals lose loft or split during repeated charging cycles

Used to position a fine point object on the optical bench

Semi-stiff nylon bristle brush on a twisted stainless steel wire handle

Six-lens optics set of three double-convex and three double-concave glass lenses with ground beveled edges

Parallel and Series Circuit Demonstrator Pack Size_5 Five color-coded ceramic ring magnetsFive bulb circuit demonstrator with 8 removable metal bars on a heavy base, letting students rearrange bars to convert between series and parallel topologies on the same set of lamps.