显微镜的计数线,格子线
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.
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}]