The numeric displays for this piece were removed from the first digital volt meter made.  I find the shape of the characters particularly pleasing to the eye.  Each digit counts back and forth 0-9 then 9-0, and each one is out of step by 1, producing a constantly changing number sequence.

The digits are made up of sheets of clear acrylic with numbers etched into them.  Each sheet is lit from the top by a separate miniature light bulb.  As they count, the numbers float back and forth in space, with the whole sequence moving in a see-saw pattern as the counts reverse.