Repair is the process of returning an unserviceable or nonconforming item to serviceable condition. The instrument is opened, or has covers removed, or is removed from its case and may be disassembled to some degree. Repair includes adjustment or alignment of the item as well as component-level repair. (Some minor adjustment such as zero and span may be included as part of the calibration.) The need for repair may be indicated by the results of a calibration. For calibratable items, repair is always followed by calibration of the item. Passing the calibration test indicates success of the repair. Contrast with: calibration (1), repair (minor)