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 card, hard carrying case, four AA batteries.

For more product details see following links: 

5100 Series Data Sheet and Specifications

5100 Series Probes

5100 Series Manual  

Part numbers (PN):  All these are Gauss/Tesla meter model 5170, only the probe and power adapter options are different for each PN: 

PN 415170 has the Standard Transverse Probe STH17-0404 and Domestic power adapter. 

PN 415175 has the Standard Transverse Probe STH17-0404 and International power adapter. 

PN 415176 has the Standard Axial Probe SAH17-1904 and Domestic power adapter.

PN 415177 has the Standard Axial Probe SAH17-1904 and International power adapter.

PN 415171 has the Standard Transverse Probe STH17-0404 and NO power adapter.