DIT-MCO SAS-107 S.L. 44523 PN#117-00144-0107 Calibration Verification Tool This is a great condition DIT-MCO Calibration Verification Tool. Appears to be intact and in good working condition. Has some signs of use including some scratching and sticker residue on the body of the device. Nothing that would impact the integrity of the item. Has the electronic connector that also appears to be in very good working order.