Product Details

Liquid-Filled Compasses (5 Pack)

Spare compasses for the CASTLE Kit (EM-8624A). Perfect for investigating the magnetic fields around straight wires.

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Description

This compass is perfect for investigating the magnetic fields around straight wires. It has a 4.5-cm diameter, liquid-filled plastic case and a 2.5-cm long needle with the north end marked in red. 

https://www.pasco.com/products/lab-apparatus/electricity-and-magnetism/magnetic-fields/em-8631#specs-panel