Handheld single-axis digital Gauss / Tesla meter for measuring magnets, magnetism of steel, and other manufacturing and scientific applications. The 5170 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 5170, only the detachable probe and AC power adapter differs for each model #:
Model 5170 includes Meter, Transverse Probe STH17-0404, Domestic power adapter.
Model 5175 includes Meter, Transverse Probe STH17-0404, Internatl power adapter.
Model 5176 includes Meter, Axial Probe SAH17-1904, Domestic power adapter.
Model 5177 includes Meter, Axial Probe SAH17-1904, Internatl power adapter.
Model 5171 includes Meter, Transverse Probe STH17-0404, and NO power adapter.