An analog method is described for computing the Gaussian integral transformation which arises in the problem of making resolution corrections. Only apparatus which is readily available has been used. The basic element is a photomultiplier which views light flashes produced on an oscilloscope screen. A multichannel kicksorter is used to analyze, sum, and record pulses. Making a resolution correction is equivalent to inverting the integral transformation. A trial‐and‐error procedure is outlined for doing this.