Purpose of the Device: Point V represents the position of the driver’s eyes. The actual position of Point V relative to Point R is determined based on the coordinate correction values specified in GB 11555 and GB 11562 for the seatback angles of different vehicle models, thereby enabling the division of the A and B zones of the windshield for the vehicle’s forward field of view.

Product Features: This device offers a choice between automatic and manual measurement modes. When automatic measurement is selected, simply choose the desired seat back angle to automatically project and delineate Zones A and B—a process that can be completed with a single button press regardless of the selected seat back angle.