Today, engraved lines or embedded fibers may be replaced by a digital image superimposed on a screen or eyepiece. Reticle accessory (PD-8) used in sniper riflesĪ reticle, or reticule also known as a graticule, is a pattern of fine lines or markings built into the eyepiece of an optical device such as a telescopic sight, spotting scope, theodolite, optical microscope or the screen of an oscilloscope, to provide measurement references during visual inspections.
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