ANTI-DAZZLE.

Press, Volume LX, Issue 18074, 16 May 1924, Page 5

ANTI-DAZZLE.

PART PLAYED BY ADJUSTMENT. Correct adjustment of the beam of a headlamp is really a very'simple matter. Yet it is extraordinary how much dazzle is caused through incorrect adjustment (writes Capt. B. de Normanville in the "Daily Chronicle ). I met some very "glaring" examples last night. In the interests of the driver the beam of light from the - headlamps should be directed straight ahead, and parallel to the surface of the ground. But such setting is also very desirable from the standpoint of other road users.* If these essentials are carried out properly, then the actual focussing of the filament can be "long 7 ' or "short, according to the driver's whim and driving methods. . ! Personally, I prefer a long, straight beam thrown well ahead. But some, people do not see particularly well at night, so travel slowly, and many of these prefer a diffused' beam. But whatever you want for yourself, you should never allow your headlamp beam 5 to become so "wonky" that direct rays dazzle approaching _ drivers instead of merely the lateral diffusion. There is a great difference —to the great inconvenience-and possible danger of the oncoming driver. . Some headlamps have a universal focal range: others have three set positions. into any one of which you can fix the little holding pins of the bulb. If you want a long beam you must put the bulb well back—in the farthest notches if the carrier is notched. If you want a diffused beam you naturally do the opposite—use the position nearest the front of the lamp. Sometimes the beam has a tendency to "'shine heavenwards; sometimes towards the opposite direction. You can counteract this by a little piece of paper used as packing, at the top' or bottom of the circular, metal end of the bulb. •Remejnber this, however: If the beam is shining too high, vou must pack the bulb' so that it is liigher (not lower); if the beam strikes the road too soon, you must pack the bulb down —not up. Contrary tilings, motor-cars, aren't they? Almost like—no, I've too many lady readers to say' it!