9-Piece Material Density Cube Set with Wooden Storage Box Entomology & Zoology_Zoology Models Convertible motor-generator running AC or

Convertible motor-generator running AC or DC in shunt or series wound configurations

sized for ripple tank and bulb-driven physics demonstrations

visible crankshaft

Plug-to-clip 12-inch black lead combining a 4mm banana plug at one end with an alligator clip at the other

1% accuracy on double silk-covered constantan coils

9-Piece Material Density Cube Set with Wooden Storage Box Entomology & Zoology_Zoology Models Convertible motor-generator running AC orNine material 1 inch cube set spanning brass, iron, copper, aluminum, hardwood, softwood, nylon, PVC, and acrylic in a foam lined wooden case for density versus material investigations.