Use of absolute values of acceleration of gravity to obtain the scale factor of Lacoste&Romberg Model G gravimeters

The Military Geographic Institute (IGM) is the institution responsible for maintaining and updating official geodesic reference system of Chile put into effect through National Geodesic Network (RGN), which consists Horizontal Vertical RGNs. This latter element made up leveling network, constituted by altitude points referenced to Mean Sea Level (M.S.L.) Gravimetric Network, consisting absolute relative stations, with gravity acceleration values (g), International Gravity Standardization 1971 (IGSN-71). IGSN-71 was adopted as world gravimetric measurement at 25th General Assembly Union Geodesy Geophysics (IUGG) in a precisión ± 0,1 mGal. current research work mainly focused on making known chief features operation correct use instrument measuring (g) that IGM uses its projects. instrumental calibration procedure here, obtaining “scale” (adjustment) factor each Lacoste&Romberg model G gravimeter orderto obtain more accurate values.The above sustained relation requirements suggested international organisations area geodesy, such Association (IAG) SIRGAS, encourage all nations implement homogeneous precise global vertical systems, gravimetry an essential setting new frame whole country, adopting physical heights.