Push Button Switch Demonstrator with 4mm Terminals Material_Porcelain deflecting a pivoting cobalt-steel compass

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

Outfitted with six drying pegs along a second tier

Single-channel aluminum 1-meter bench with engraved graduations and leveling-screw feet

this universal charger keeps portable instruments running between sessions without rotating in fresh disposable batteries

Push Button Switch Demonstrator with 4mm Terminals Material_Porcelain deflecting a pivoting cobalt-steel compassMomentary 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.