Bob C just sent in a cool clock featured on Hack a Day - it is a clock made out of antique display technology.  The digits are written out on a long strip and then are wound on two rollers.  The digits are changed by winding the appropriate spool to expose the desired digit. This creates a neat effect that really can't be replicated an other way.  Be sure to check out for more info. [via hack a day via Bob C.]



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