HT20 high precision permanent magnet for Gauss meter handheld digital teslameter surface magnetic field Tester 20,000 Gauss magnetic instrument table (host + probes) 1 + power supply dual-use standard batteries + gift
HT20 high precision permanent magnet for Gauss meter handheld digital teslameter surface magnetic field Tester 20,000 Gauss magnetic instrument table (host + probes) 1 + power supply dual-use standard batteries + gift