United Scientific® Ampere’s Rule Apparatus – Magnetic Field Demonstration Kit with Brass Wire & Compasses

Discover electromagnetism through hands-on learning with the United Scientific® Ampere’s Rule Apparatus. Designed for middle to high school students, this educational kit makes it easy to visualize and experiment with magnetic fields generated by electric currents.

Featuring a sturdy brass wire mounted on a clear plastic base, this apparatus allows you to observe direction and strength of magnetic fields using six 16 mm compasses and one 45 mm compass—ideal for classroom physics lessons, STEM labs, and homeschool demonstrations. The included activity guide walks users step-by-step through Ampère’s Rule (also known as the right-hand rule), helping learners understand how current flow creates magnetic field lines around a conductor

Compact and robust, the apparatus measures 7″ × 3″ × 4″ and weighs approximately 1 lb, making it easy to store or transport

Whether you're reinforcing classroom curriculum or building your physics toolkit, this unit offers a clear, interactive way to teach and explore the fundamentals of electromagnetism.