9-Piece Material Density Cube Set with Wooden Storage Box Entomology & Zoology_Zoology Models Plug-to-clip 12-inch black lead combining

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

deflecting a pivoting cobalt-steel compass needle inside a rectangular conductor frame to show that current generates a magnetic field

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

sized for ripple tank and bulb-driven physics demonstrations

9-Piece Material Density Cube Set with Wooden Storage Box Entomology & Zoology_Zoology Models Plug-to-clip 12-inch black lead combiningNine 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.