Push Button Switch Demonstrator with 4mm Terminals Material_Porcelain Bare 20 SWG copper wire

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

and pins outfit groups for hands-on study of pinhole imaging

Outfitted with six drying pegs along a second tier

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

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

Push Button Switch Demonstrator with 4mm Terminals Material_Porcelain Bare 20 SWG copper wireMomentary 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.