100Ω Variable Resistor Demonstrator with 4mm Terminals Capacity_3800mL a 75mm-long equilateral acrylic prism

a 75mm-long equilateral acrylic prism with 25mm faces refracts light through measurable angles for Snell's law and rainbow demos

Used in laboratory apparatus that needs interchangeable rotary scale indicators

Base-mounted plastic manometer whose fluid column visibly tracks pressure differences

Stained smears across 12 bacterial slides cover Gram-positive and Gram-negative morphologies for microbiology and cell-identification coursework

100Ω Variable Resistor Demonstrator with 4mm Terminals Capacity_3800mL a 75mm-long equilateral acrylic prismAdjustable 100 ohm variable resistor in an ABS module with 4mm sockets, letting students sweep resistance from zero to maximum to watch a circuit's current and brightness respond in real time.