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Show POWER IN THIS FLASHLIGHT Continued Experiments Have Resulted in Development of a Really Remarkable Re-markable Article. From the pocket flashlight operated by two or three dry cells of roinut size the battery searchlight has been steadily improved until remarkable results are obtained. Some time ago there was devised a searchlight of 500 foot range operating op-erating on six or eight volts. More recently a battery searchlight has been introduced with a range of 2,000 feet up to half a mile, operating on six volts. Equipped with a seven and one-half inch adjustable focus, single shell reflector, on a recent photometer test one of these searchlights gave 45:$ cnndlepower.. The combination of a nitrogen-filled tungsten lamp and a correctly designed de-signed reflector has worked wonders for the battery-operated searchlight. New York Herald. |