Japan's Vest Rocket ***** - The "Pencil" rocket, just before it was tested in Tokyo this month. Japan's entry into the field of rocket research has started in a small way. At the supersonic aviation engineering institute in Tokyo, tests have been made with a tiny "Vest Rocket" missile called "The Pencil" which is equipped with tiny fuel and engine compartments and four tail fins. the tiny rocket reached ***** speed of 382 mile-and-hour in tests designed to determine its velocity and stability. P