Push Button Switch Demonstrator with 4mm Terminals Item Type_Scoop one fitted with an exploder

one fitted with an exploder piston for impulse experiments

teaching electromagnetism

An 18mm pole gap on this 37 x 13 x 10mm Alnico U-shape concentrates field strongly enough to bend filings into clear field lines

Used to introduce known resistance into a circuit by removing brass plugs from sealed coil contacts

sized for cross-bench reach in small-scale electronics work where 4mm hardware is too large

Push Button Switch Demonstrator with 4mm Terminals Item Type_Scoop one fitted with an exploderMomentary 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.