"micro tube racks"

With the magnet is on the outside, it's easy to see the science behind these eddy tubes.

Compares thermal expansion of various liquids.

Great density set for physics classrooms and lessons.

Wide range of cubes for density experiments.

Density Cubes, Set of 6 Metals, 0.4" (10mm) sides.

Specific Gravity Cubes with Hooks.

Density Cubes, Set of 7 Metals with Hooks, (20 mm) sides.

Cubes have 2 cm(0.78") sides with a hook for density investigation and specific gravity activities. Element stamp indicates material.

Density Cubes, Set of 4 Metals with Hooks, 1.26" (32 mm) sides.

Set of 9 cubes, 25 mm side. Supplied in wooden box.