1V DC Interchangeable Dial for Demonstration Meter Waves & Oscillation_Sound & Resonance Demonstrates how current through a

Demonstrates how current through a coil produces a controllable magnetic field

and a reinforced rim to protect against accidental impacts

sized for short-pitch breadboard wiring where stackable plugs let multiple leads share a single terminal

supplying the third-color short-reach line in high-current 4mm-socket bench-circuit wiring

1V DC Interchangeable Dial for Demonstration Meter Waves & Oscillation_Sound & Resonance Demonstrates how current through aOne volt DC scale on a 315x115mm laminated panel with sealed multiplier, reconfiguring the demonstration meter as a low voltage voltmeter for single cell and battery pack readings.