Handheld single-axis digital Gauss / Tesla meter for measuring magnets, magnetism of steel, and other manufacturing and scientific applications. The 5180 comes with a detachable probe, zero gauss chamber, CD instruction manual, calibration certificate card, hard carrying case, and four AA batteries.

For more information see following links:

5100 Series Data Sheet and Specifications

5100 Series Probes

5100 Series Manual

Gauss/Tesla Meter Model numbers: All these use the same Meter as 5180, only the detachable probe and AC power adapter differs for each model #:
Model 5180 includes Meter, Transverse Probe STD18-0404, Domestic power adapter.
Model 5185 includes Meter, Transverse Probe STD18-0404, Internatl power adapter.
Model 5182 includes Meter, Transverse Probe STD18-0402, Domestic power adapter.
Model 5183 includes Meter, Transverse Probe STD18-0402, Internatl power adapter.
Model 5186 includes Meter, Axial Probe SAD18-1904, Domestic power adapter.
Model 5187 includes Meter, Axial Probe SAD18-1904, Internatl power adapter.
Model 5181 includes Meter, Transverse Probe STD18-0404, and NO power adapter.