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  Hand-held sewing machines are very popular on TV shopping shows, eBay and Internet malls. It’s tempting to want one for such simple sewing chores as sewing on a button or repairing a few loose inches in a seam. There are very small and inexpensive sewing machines that call themselves “hand-held” because no set up …

  Hand-held Metal Detectors are designed to safeguard security-sensitive areas like schools, courtrooms, corrections facilities, sports events, businesses, nightclubs, bars and other public areas and events. They are used along with walk-through metal detectors. In 1881, Alexander Graham Bell constructed one of the world’s first metal detectors in an attempt to find an assassin’s bullet …