4-Stroke Diesel Hand-Crank Engine Model, 16" Pack Size_6 Triple-parallel plastic pulley with three

Triple-parallel plastic pulley with three 50mm wheels on a steel frame with end hooks

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

Wall-mountable beech wood draining rack measures 20 x 20 inches and holds up to 90 pieces of labware inverted for post-wash drying in chemistry labs

Four-cube specific gravity set in brass

4-Stroke Diesel Hand-Crank Engine Model, 16" Pack Size_6 Triple-parallel plastic pulley with threeWalks students through four stroke diesel operation on a 16 inch hand cranked model, visible crankshaft, cam, injection pump, and 6V powered ignition light staging each step.