G Meter w/CPI
Zero Length Metal Spring
Reliable - Low Maintenance
Worldwide Range - No Resetting
Low Drift <1.5 mGal per Month
No Data Logging
Manual Reading
CPI System - improves repeatability
Accuracy 0.04 mGal or Better
0.01 to 0.02 mGal Repeatability

D Meter w/CPI
Zero Length Metal Spring
Reliable - Low Maintenance
200 mGal Range
Worldwide Range with Reset
Low Drift <1.5 mGal per Month
No Data Logging
Manual Reading
CPI System - improves repeatability
Accuracy 0.01 mGal or Better
0.005 to 0.01 mGal Repeatability