network (broadcasting) a communication system consisting of a group of broadcasting stations that all transmit the same programs; "the networks compete to broadcast important sports events"
eyepiece,
ocular combination of lenses at the viewing end of optical instruments
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Wiktionary
Substantiv
reticle -
A grid, network, or crosshatch found in the eyepiece of various optical instruments to aid measurement or alignment.
A reticle is a net of fine lines or fibers in the eyepiece of a sighting device, such as a telescope, a telescopic sight, a microscope, or the screen of an oscilloscope. The word reticle comes from the Latin "reticulum," meaning "net. " Today, engraved lines or embedded fibers may be replaced by a computer-generated image superimposed on a screen or eyepiece.
