graticule

Noun
  1. A network of fine lines, dots, cross hairs, or wires in the focal plane of the eyepiece of an optical instrument (synset 104089998)
    is a type of: network - a system of intersecting lines or channels
    has: cross hair, cross wire - either of two fine mutually perpendicular lines that cross in the focus plane of an optical instrument and are use for sighting or calibration
    is a part of: eyepiece, ocular - combination of lenses at the viewing end of optical instruments
    same as: reticle, reticule

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