Auditing of measurement stations is critical to insure proper credit for delivered. Our experience has shown that over 3% of months audited on chart measurement stations have problems that result in a measurement adjustment. Return on investment in auditing should be greater than two to one. If properly installed check measurement exists and is used to select those stations for which a full audit is performed, the return may be a high as ten to one, not including the ongoing cost of the check measurement, or four to one including such costs. Therefore failing to properly audit can result in substantial profit loss for your company