Graticule and Reticulum

Graticule noun - A network of fine lines, dots, cross hairs, or wires in the focal plane of the eyepiece of an optical instrument.

Reticulum and graticule are semantically related. In some cases you can use "Reticulum" instead a noun "Graticule".

Reticulum noun - Any fine network (especially one in the body composed of cells or blood vessels).

Graticule and reticulum are semantically related. You can use "Graticule" instead a noun "Reticulum".