Screen Method for Headlamp Aiming (Visual Aim)
The screen method requires an area set up specifically for headlamp aim.
The area should consist of a level surface large enough to allow for a vehicle and an additional 7.62 m (25 ft) as measured from the face of the headlamps to the aiming screen.
The screen (1) should be a wall or other flat surface that is at least 1.52 m (5 ft) high by 3.66 m (12 ft) wide.
It should have a matte white surface and be in an area with low ambient light. The aiming surface should be 90 degrees (or perpendicular) to the floor. The screen should be provided with a permanent vertical reference line (2) 2 feet from the left edge of the screen.
After the aiming screen has been set up and located, paint or tape a reference line (4) on the floor 15.24 m (50 ft) from the vertical reference line (7) on the screen. This line should be perpendicular to the aiming screen and a mark (5) placed at 7.62 m (25 ft) from the screen.
Ensure the reference line (4) is straight by performing the following steps:
- Measure 7.62 m (25 ft) to the right of the reference line (4) and make a temporary mark on the floor (2).
- Measure 7.62 m (25 ft) to the left of the reference line (4) and make a temporary mark on the floor (6).
- Place a temporary mark (3) anywhere on the reference line (4).
- Measure from point 2 to point 3, and from point 6 to point 3. The measurements should be equal.