An evaluating apparatus arranged to evaluate an item-transport system having a flow path. The apparatus includes one or more position markers adjacent the path and an evaluating device for sensing the markers and conditions of the transport system. The evaluating device has at least one evaluation sensor configured to (A) sense conditions of the transport system and (B) produce evaluation-sensor data based on the sensed conditions. The evaluating device also has a position-marker sensor configured to sense the position markers and produce position-marker data. The apparatus further includes a distance meter configured to produce distance data and at least one computing device configured to determine a particular location at which the evaluating device was along the path of the item-transport system when a particular condition of the item-transport system was sensed based on the evaluation-sensor data, the position-marker data, and the distance data.