reticle

A grid or pattern placed in the eyepiece of an optical instrument, used to establish scale or position.

Same as reticule, 2.

A small net.

A reticule. See Reticule, 2.

A grid, network, or crosshatch found in the eyepiece of various optical instruments to aid measurement or alignment

A small net

a network of fine lines, dots, cross hairs, or wires in the focal plane of the eyepiece of an optical instrument