Source : Webster's Revised Unabridged Dictionary (1913)

Graticule \Grat"i*cule\, n. [F. See {Graticulation.}]
   A design or draught which has been divided into squares, in
   order to reproduce it in other dimensions.

Source : WordNet®

graticule
     n : a network of fine lines, dots, cross hairs, or wires in the
         focal plane of the eyepiece of an optical instrument
         [syn: {reticle}, {reticule}]