6-Piece Drilled Ball Set for Pendulum Demonstrations Glass Bottles_Reagent Bottles 75 inch acrylic frame with

75 inch acrylic frame with 4mm sockets

Cast-metal base mounts a heavy-duty electromagnet-driven fork at ~80Hz

this stainless steel one-meter ruler carries stamped centimeter and millimeter graduations along its length

this natural gas Bunsen burner mounts on an extended anti-tip cast-iron base

Insulated 2mm-plug lead in the small-scale lead family

6-Piece Drilled Ball Set for Pendulum Demonstrations Glass Bottles_Reagent Bottles 75 inch acrylic frame withSix material drilled ball set with 25mm balls of wood, aluminum, steel, copper, brass, and lead threading onto string or rod for mass dependent pendulum period comparisons.