The dials have the words "CHIME ALARM" in either small lettering (0.4 mm X 5.3 mm) or large lettering (0.7 mm X 7.9 mm). In addition, the word "Westclox" was lettered in two ways. "Small Westclox" has all the letters of the word "Westclox" in capital letters, all the same height. In the "Large Westclox" type, the "W" is upper case and the other letters are lower case. The small "Chime Alarm" and "Small Westclox" were used on the first dials. Then, the "Large Westclox" came into use. Finally, the large "Chime Alarm" replaced the small version.