Intensive Magnitude and Moment of Gravity

At B210 of the 1st Critique, and then again at B211, the expression "moment of gravity" is included in Kant's explanation of his concept of Intensive Magnitude.  He uses it to refer to a cause that occurs in an instant, within which the cause can be conceived as always being diminished to a lesser degree, the range of which is 'intensive magnitude'.  However, whatever 'gravity' connotes in the expression, it is, at minimum, unhelpful in this context.  For, in its meaning that is most closely associated with causality, 'gravity' is a constant, and, therefore, is inconceivable as an intensive magnitude.