48-Piece Density Cylindrical Bars Super Set (Brass, Aluminum, PVC, Polypropylene)

This 48-piece density super set includes four complete cylindrical bar sets in brass, aluminum, PVC, and polypropylene. All cylinders share the same 0.5" (12.5mm) diameter but vary in length. Each set comes with its own labeled wooden storage block. The set enables students to explore the relationship between density and mass, demonstrating how a substance's density remains constant even as mass and volume change. A complete manual describes density, mass, and volume fundamentals with instructions for calculations. Required but not included: a weight device capable of measuring tenths of grams and a metric ruler or caliper. Tolerances are within plus or minus 5% of stated dimensions.