A computer program based on C has been developed to design a circular proving ring of uniform strength having continuously variable cross-sectional area, with a view to increase its sensitivity through large diametral-deflection. The developed code calculates the thickness at any section of the ring to be designed ensuring that the maximum combined stress in any angular segment just reaches the allowable limit of stress, governed by the elastic limit of the ring material. Consequently, elastic flexural stiffness of the entire ring is fully utilized that fulfills the desired significant increase in diametral deflections. Extensive design data obtained using the code verify the fact that, in terms of sensitivity of the ring the best result is obtained for large values of width and mean radius. In terms of manufacturing cost, significant amount of material can be saved for such a designed ring. Moreover, given all similar conditions, the sensitivity can be increased significantly compared to a conventional proving ring thus eliminating the need of expensive vibrating reed mechanism