5-Material Equal Mass Density Set (Aluminum, Brass, Nylon, Acrylic, PVC) Metal Labware_Metal Bases & Rods paired with electroscopes and pith

paired with electroscopes and pith balls in classic electrostatic-charging investigations

Metal spouting cylinder with multiple outlet holes at different heights

with identical volumes across specimens for direct mass-density comparison

Turning the hand crank walks students through every stage of the 2-stroke gasoline firing cycle on a 14-inch model

101-piece teacher-grade molecular model set with 51 atoms and 50 bonds covering carbon

5-Material Equal Mass Density Set (Aluminum, Brass, Nylon, Acrylic, PVC) Metal Labware_Metal Bases & Rods paired with electroscopes and pithEqual mass density set in aluminum, brass, nylon, acrylic, and PVC, the shared mass isolating volume and density as the distinguishing variables across metals and polymers.