b"In the years following, Arnold Engineering produced several other magne\x00c lines. Tape wound cores became the third type of magne\x00c material. They were made from nickel alloy tapes and are used in transformers and electronic control devices. Bobbin cores followed and were available in a wide range of sizes to suit the ul\x00mate use of the core in electronic computer assemblies. Wound Core MagnetsIn 1951, transformer cores (Silectron), made of grain oriented silicon steel, were produced to become Arnold Engineering's \x00h magne\x00c line. They were supplied in sizes weighing a frac\x00on of an ounce to over a ton. In 1955, a line of iron powder cores was introduced. Their principal usage was in various radio, television, hearing aid, computer and aerospace applica\x00ons. In 1964, Arnold Engineering formally announced its ceramic magnet line called Hard Ferrites. These products are used primarily in such applica\x00ons as magne\x00c separators, Ceramic Magnets loudspeakers, holding devices, magne\x00c chucks, and D. C. motors. In 1965, Arnold Engineering expanded its custom sli\x00ng and rolling of various precision and highly-alloyed metals. Metals as so\x00 as copper can be rolled 50 \x00mes thinner than a human hair. Such ultra-thin metal foil is custom rolled for use in electronic, electrical and aerospace applica\x00ons. Precision Thin MetalsP\x00\x00\x00 5"