F.W.bell 3-axis ELF gaussmeter model 4190: 50Hz/60 Hz magnetic field tester

Description

This FWBELL 4190 model features three axis sensors which insure that measurements remain accurate regardless of the orientation of the instrument.
key features: 3 1/2 digit LCD display, Auto Zero, Min./Max./Peak Hold, Auto Range and Relative Mode. Selectable X, Y, or Z Axis plus Vector Summation, true RMS reading. User selectable Gauss or Tesla readout. Built-in software eliminates the need for complex calibration procedures. User prompts on the LCD allow fast, simple pushbutton operation. Low battery detection. Complete with instruction manual, soft carrying case, and four AAA batteries. USB interface allows power through the USB (cable not included), can also be powered by external 5VDC adapter (not included).
Specifications:
Calibration Frequency 50/60 Hz
Low Cost, Small Lightweight(6.3 Oz) and Portable(4"x2.6"x1")
High Accuracy(1% error) with BW: 30-2000 Hz
MilliGauss or MicroTesla Display Options
Range 0.1 mG to 1999 mG with 0.1 mG resolution
USB communication port & +/-3V FS analog output
4 AAA alkaline batteries & approx. 50 hours life
Selectable X. Y, or Z Axis plus Vector Summation
True RMS Reading w/ 3 1/2 digit LCD
Made in the U.S.A.