Resistances of cylindrical resistors have been approximately calculated by means of a tentative method. Two-dimensional resistances can be calculated using conformal mapping method. An assumption which the two-dimensional representation may be rotated about a central axis is introduced to get three-dimensional results. Such rotation corresponds the integration with some weight. The calculations are made in two cases,the cylindrical resistor with electrodes on side surface at both ends and the rod-type composition resistor. Numerical results are in agreement with experimental results for the resistorsof appropriate size.departmental bulletin pape
