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

The 5180 also includes added features.  For more product information 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 5180, only the probe and power adapter options are different for each PN: 

PN 415180 has the Standard Transverse Probe STD18-0404 and Domestic power adapter. 

PN 415185 has the Standard Transverse Probe STD18-0404 and International power adapter. 

PN 415186 has the Standard Axial Probe SAD18-1904 and Domestic power adapter.

PN 415187 has the Standard Axial Probe SAD18-1904 and International power adapter.

PN 415181 has the Standard Transverse Probe STD18-0404 and NO power adapter.