Magnaflux, FSM-2 Digital Gauss Meter Magnaflux| 12040 Magnaflux, FSM-2 Digital Gauss Meter Print Magnaflux| 12040 Magnaflux, FSM-2 Digital Gauss Meter Digital hall effect gauss meter to measure the magnetic field strength in a magnetized or demagnetized part. 133033: Magnaflux Digital gauss meter FSM-2 delivered with tangential probe 133039. 9V batteries, zero gauss chamber and carrying case. 5180: Digital gauss meter 5180 delivered with 10.1cm (4") transverse probe no. STD18-0404. Zero gauss chamber no. YA-111. AA batteries, AC power adapter, rigid carrying case and calibration certificate. 5170: Digital gauss meter 5170 delivered with 10.1cm (4") transverse probe no. STD18-0404. Zero gauss chamber no. YA-111. AA batteries, AC power adapter, rigid carrying case and calibration certificate. Request for information