To determine the correct size for your Salisbury lineman gloves, the first step is to measure the palm's circumference using a cloth measuring tape, or even a piece of string that can be measured with a ruler. The resulting inch measurement, rounded up to the nearest whole number, is the numerical size needed.
This measurement is an approximation, and can vary depending on hand and finger shape. The best fitting glove might be a half or full size bigger or smaller than the hand measurement. If the user will be wearing any additional glove liners, this needs to be taken into account when measuring palm size, as well.