Large Ball-Bearing Differential Pulley, 20/30/40/60mm Steps Glass Sets & Apparatus_Organic Chemistry Sets equipping a class for dual-diameter

equipping a class for dual-diameter compound-pulley experiments without cord-threading setup

the candy-bar form letting students break each piece into smaller magnets that retain their own north and south poles

with AC and DC both available on separate terminals for electronics builds

this twenty-meter fiberglass tape measure carries a non-conductive waterproof PVC coating

Higher-impedance single-decade resistance box stepping from 10k to 100k ohms in 10k-ohm increments

Large Ball-Bearing Differential Pulley, 20/30/40/60mm Steps Glass Sets & Apparatus_Organic Chemistry Sets equipping a class for dual-diameterFour step large ball bearing differential pulley with 20, 30, 40, and 60mm steps at 6. 5 inches overall, mounted on a 0. 75 inch post for attachment to standard rod and clamp stands.