Medium Pulley with Universal Clamp Subject_Chemistry and a semicircular dish

and a semicircular dish

Sodium chloride lattice kit with 27 color-coded gray and green atoms plus 54 connectors for building the full cubic NaCl crystal structure in three dimensions

each foam-protected in a wooden case with frequencies labeled

Five 32mm ceramic ring magnets stack on a 150mm wooden dowel rising from a 5

Double-parallel plastic pulley with two 50mm wheels in a steel frame and end hooks

Medium Pulley with Universal Clamp Subject_Chemistry and a semicircular dishMedium size 5 inch pulley on a universal clamp accepting a variety of support surfaces, a flexible positioning option for force, mechanical advantage, and motion experiments.