Aiming Screen Area

Fig 1: Measuring Distance Between Headlamps Face & Aiming Screen

Courtesy of GENERAL MOTORS CORP.

The area shall 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.

Fig 2: View Of Headlamp Aiming Screen & Vehicle Alignment

Courtesy of GENERAL MOTORS CORP.

The screen shall be a wall or flat surface at least 1.52 m (5 ft) high by 3.66 m (12 ft) wide with a matte white surface well-shaded from extraneous light, and 90 degrees to the floor. The screen shall be provided with a permanent vertical reference line 2 feet from the left edge of the screen, 2 laterally adjustable vertical tapes, and one vertically adjustable horizontal tape.

After the aiming screen has been set up and located, paint or tape a reference line on the floor 15.24 m (50 ft) from the vertical reference line on the screen. This line shall be perpendicular to the aiming screen and a mark placed at 7.62 m (25 ft) from the screen.