1) Clock brand 
Audichron was a talking clock, or a time announcer which was developed and produced by the Audichron Company, starting in the 1930s. There were several types of Audichron machines including the stand time piece (STM), M12, temperature machine (TEMP) and the Comparator. == Types == ===STM=== STM stood for `Small Town Machine`. This was the standa.....