The Sensor Pak includes 1 Industrial Accelerometer 100 mV/g and cable with BNC connector, (1) two-pole AINiCo Magnetic Base with 1/4″ x 28 tap, (1) 1/4″ x 28 connecting stud,  and (1) 4.5″ stinger/probe It is compatible with Monarch Instrument’s EXAMINER 1000 Vibration Meter.