Water Molecular Lattice Model Kit, 199-Piece Glass Bottles_Reagent Bottles Ten-pack of 19mm steel ball

Ten-pack of 19mm steel ball bearings with uniform mass and dimensions

sized for compact circuits where stackable plugs branch multiple leads off a single terminal

Manually-operated seismograph model that traces shock waves onto a pulled paper strip

Corrosion-resistant twelve-piece stainless steel slotted mass set totaling 1110 grams from 1 to 500 gram pieces

Water Molecular Lattice Model Kit, 199-Piece Glass Bottles_Reagent Bottles Ten-pack of 19mm steel ball199 piece water lattice kit for building a three dimensional representation of hydrogen bonded water molecules, illustrating the arrangements that underlie water's unusual properties.