It can measure the displacement of remote or inaccessible objects. The camera tracks the motion of the target and provides an analog output proportional to displacement. Custom optics allow a range in the field of view from 0.05” up to several feet. Equipment Supplied One Model 5100 Control Unit One Model 806B Tracking Head One 10’ Interconnecting Cable One Storage/Carrying Case One Standard Lens Set Warnings High Voltage The tracking head and its power supply contain voltages dangerous to human