Abstract

This is a scanned draft of my very early work, not completed due to the loss of the original electronic version. The gravitational constant G has been a subject of interest for more than two centuries. Precise measurements indicate that it is equal to 6.673(10)xl0-11 m^3/kgs^2, with relative standard uncertainty of 1.5x10-3. The need for such constant is discussed. Various systems of units of measure have emerged since Newton, and none of them is both practical, and useful in theoretical research. The relevance of a metric system that only has length and time as base units is analysed, and such system proposed. As a result, much higher clarity of physical quantities is achieved. The gravitational and electric constants can be eliminated to become non-dimensional, which results in elimination of the kilogram of mass and the Coulomb of charge in favour of the same composite unit for both physical quantities being m^3/s^2. The system offers a great advantage to General Relativity where only space-time units can be used.