Handy, pocket size manual measures 3 x 6 inches. Packed with technical information on cathode ray/power/picture tubes, batteries, test equipment, et al. Contains a daily pocket reminder, color maps of the United States and the world.
Good, complete condition with daily pocket reminder unused. Several map pages in back are loose but present. Carried by radio and television repairmen back in the day.
From my big vintage technical paper find.
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