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