Comparison

Model	GM08	GM07	VGM02
Probe included (TP002)
Carry case included
Zero flux can
Auto zero function
Backup
Data Storage
Retention of data after power off
Direct Current (DC)
Direct Current maximum (DC Peak max)
Effective AC maximum (AC PEAK)
Effective AC (AC RMS)
Effective AC maximum (AC MAX RMS)
Automatic mode
Analogue output
Port USB
RS232 Interface
Software
External power supply
PSU	Option

Model	GM08	GM07	VGM02
Accuracy	+/- 1%	+/- 1%	+/- 1%
Reproducibility	<0.5%	<0.5%	<0.5%
Interval Frequency	DC & 15Hz-10kHz	DC & 15Hz-10kHz	DC & 15Hz-10kHz
Cadence sampling display	3/Sec	3/Sec	3/Sec
Measurement ranges	4 + automatic interval	4 + automatic interval	4 + automatic interval
Range 1 (resolution)	0.000-2.999 T (1mT)	0.000-2.999 T (1mT)	0.000-2.999 T (1mT)
Range 2 (resolution)	0.000-299.9mT (100 µT)	0.000-299.9mT (100 µT)	0.000-299.9mT (100 µT)
Range 3 (resolution)	0.000-29.99mT (10 µT)	0.000-29.99mT (10 µT)	0.000-29.99mT (10 µT)
Range 4 (resolution)	0.000-2.999mT (2 µT)	0.000-2.999mT (2 µT)	0.000-2.999mT (2 µT)

Model	GM08	GM07	VGM02
View	Graphical LCD	Graphical LCD	None
Units	Tesla, Gauss, KA/m, Oersted
Languages	French, English, German, Italian, Spanish and Portuguese		N/A
Main Menu	Full Display menu		No, only the Windows interface
Use temperature	0°C to 50°C	0°C to 50°C	0°C to 50°C
Storage temperature	-20°C to 70°C	-20°C to 70°C	-20°C to 70°C
Power	4x 1.5V battery (supplied)	4x 1.5V battery (supplied)	9V external power supply (included)
Dimensions (L x l x h)			134mm x 134mm x 52mm