The techniques of this disclosure relate to a device for determining a characteristic of a camera. The device includes a moveable fixture operable to position a target in a field of view of a camera. A face of the target has linear regions of interest, and the face is normal to a line of sight of the camera. The moveable fixture is configured to rotate the target about a center of the face to adjust an angle of the linear regions of interest relative to a horizontal axis and a vertical axis of the field of view, thereby enabling a determination of a characteristic of the camera based on the linear regions of interest. Target rotation angles can be determined for any camera field position and indexed automatically to improve testing efficiencies while increasing the number of target positions that are characterized in the camera's field of view.