The surface magnetic field distribution test generally consists of a Gaussian meter (Hall probe), data acquisition and analysis device, and tests the uniformity state of the magnetic field distribution.

A Gaussian meter made based on the principle of Hall effect can test the magnetic induction intensity within the range of Hall chips. It can be used in conjunction with a rotating mechanism to perform a circular test on the object being tested. The magnetic induction intensity values of the circular test can be analyzed using an analysis device to form a surface magnetic field distribution curve, typically in Gs/mT.

Surface magnetic field distribution testing equipment is a high-precision and comprehensive magnetic measurement device, commonly used in laboratory settings such as product development, production process sampling, and defect analysis, or for full inspection of production lines with high requirements for magnetic performance quality.