An ancient Greek unit of distance equal to a finger width, about 19 millimeters or 0.75 inch. There were 16 daktylos in the pous, the Greek foot, and 24 in a pechys (cubit). This unit was the Greek predecessor of the Roman digit (See below)
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}