Van De Graaff Upgrade Kit For Old Models class This rod is designed to

This rod is designed to be exceptionally robust

In materials science

This specialized Inductance Apparatus is equipped with a large iron core and coils capable of achieving incredibly high inductance

solvent filters

This Multifunction LED Timer measures and displays time intervals up to 999

Van De Graaff Upgrade Kit For Old Models class This rod is designed toThe Van De Graaff Upgrade Kit is suitable for both small and large models. It enables conversion of very old models (that have a non ball bearing upper pulley) to later models with ball bearings in the upper pulley. The kit also replaces the pulley mounting and combs, and includes a new charging belt. A Van de Graaff generator creates and accumulates a significant amount of static electricity on a metal sphere. Upgrade Kit Includes: 1 x Top pulley