Push Button Switch Demonstrator with 4mm Terminals Material_Porcelain Lead plate with 4mm socket

Lead plate with 4mm socket terminals for the simple-cell apparatus

Shopping for someone else but not sure what to give them

deflecting a pivoting cobalt-steel compass needle inside a rectangular conductor frame to show that current generates a magnetic field

sized for the student electrolyzer to study electroplating

Bare 20 SWG copper wire on a 250g reel approximating 140 feet

Push Button Switch Demonstrator with 4mm Terminals Material_Porcelain Lead plate with 4mm socketMomentary contact push button switch on a base with two 4mm terminals, snapping closed only while the button is held to introduce momentary versus latched switching behavior.