9-Piece Material Density Cube Set with Wooden Storage Box Entomology & Zoology_Zoology Models exposing the moving parts so

exposing the moving parts so students see directly how a DC current drives a rotating magnetic field

sized for ripple tank and bulb-driven physics demonstrations

Copper 2 by 0

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

Alnico Grade III bar pair at 75 x 15mm with steel keepers in a cardboard box

9-Piece Material Density Cube Set with Wooden Storage Box Entomology & Zoology_Zoology Models exposing the moving parts soNine 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.