Handheld single-axis digital magnetometer 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, hard carrying case, and four AA batteries.

For more product details see following links: 

5100 Series Data Sheet and Specifications

5100 Series Probes

5100 Series Manual  

Manufacturer's model numbers:  All these include the same Gauss/Tesla meter as the model 5170, only the probe and power adapter options shown above are different: 

Model 5170 has the Standard Transverse Probe STH17-0404 and Domestic power adapter. 

Model 5175 has the Standard Transverse Probe STH17-0404 and International power adapter. 

Model 5176 has the Standard Axial Probe SAH17-1904 and    Domestic power adapter.

Model 5177 has the Standard Axial Probe SAH17-1904 and International power adapter.

Model 5171 has the Standard Transverse Probe STH17-0404 and    NO power adapter.