To demonstrate use of a gaussmeter.
Bell Model 620 Hall effect gaussmeter with radial and axial probes.
This is a Hall probe gaussmeter of research quality. It can measure fields from a fraction of a gauss to over 10 kilogauss (1 Tesla). Radial and axial probes are included. Ask for magnets (Demonstration J5-04: MAGNETS) and measure their fields with a gaussmeter.◙
Booklet, The Hall Effect and Its Applications, F.W. Bell Inc. ◙Catalog Description, Gaussmeter Probes, F.W. Bell.