Clock - shows the progress of time by letting the numbers be written in words by the clockworks. Reading clockwise, the time being is visible through a word and readable by the completeness of the word, 12 words from “one” to “twelve”.

The word “three” completely appears when it’s exactly 3 o’clock and will then transform again as time passes. The word “four” begins to appear and at exactly 4 o’clock the word “four” is clearly visible. The word “three” is by then totally vanished and no longer readable.

via pan-dan