Scintrex Gravity Meter CG3

Reading Resolution: 0.005 milligal.
Repeatability in Field Use: less than 0.01 cGal standard deviation.
Standard Memory: 48K RAM solid-state memory (up to 1290 gravity observations).
Operating Temperature: -40° C to +45° C.

Scintrex Gravity Meter CG5

Reading Resolution: 0.001 milligal.
0.005 milliGals or better.
Standard Memory: 12 Mbytes (approximately 200,000 readings).
Operating Temperature: -20° C to +45° C.
No GPS capabilities.

Scintrex Gravity Meter CG6

Reading Resolution: 0.0001 milligal.
Standard Deviation: <0.005 milligal.

Operating Temperature: -40° C to + 45° C.
Touch-free Operation: Handheld tablet w/ Bluetooth.