The least squares evaluation method for form and position errors and the Calculation by computer

This paper describes the characteristics which evaluate the form and position errors by least squares method. It proposes two calculation methods about form and position errors of "the least squares method". That is linearization, successive iteration and method of optimization (mode search method). The programmings are shown that the calculation is accurate enough and the operation is fast. It also proposes and explains a new evaluating index-errors of "least squares" root-mean square.