抄録
In order to calibrate the accuracy of the North American Gravimeter AGI-108, a series of observation was carried out in the neighborhood of the Geological Survey of Japan. The results are summarized as follows: 1) The probable error of the North American Gravimeter AGI-108 is about±0.05 mgal. 2) The accuracy is not correlate with the amount of the difference of observed gravity value. 3) It seems that the “ drift ” is not always proportional to the interval of the measured time. Sometimes the scale reading have been jamped up by the shocks of the car and other disturbances.
