Electric Appliances & Apparatus
June 18, 1944
Navy loudspeaker, usable in great naval battles, is a high-powered unit 12 1/2 inches in diameter and weighing about 25 pounds. The illustration explains its nickname, the "salad bowl." The magnetic unit is fitted with a two-piece permanent magnet.
LAZAR ID #10279-3 S-3.4-e
Original Caption by Science Service