Make electric charge visible The Demonstration Electroscope is a precise, classroom-friendly instrument for exploring electric charge and electrostatic phenomena. Its aluminum, needle-based design offers a clear advantage over traditional leaf electroscopes—the needle stays put during experiments instead of fluttering—making observations easier to see and results more reliable. Compact and ultra-sensitive, it’s ideal for front-of-class demonstrations and student investigations alike. Why Teachers Love the Demonstration Electroscope Stable, easy-to-see readings: The needle remains steady, eliminating the flutter common with leaf electroscopes. High sensitivity: An ultra-responsive needle pivots smoothly when charge is applied to the top disk. Durable, compact design: Built for frequent classroom use with a small footprint. Clear demonstrations: Makes subtle electrostatic effects visible to the whole class.