26 Apr 2019 Reticle is a pattern of fine lines or markings built into the eyepiece of a sighting device,such as a telecopic sight in a telescope, a microscope,or the screen of an oscilloscope ,to provide reference during visual examination.Today,engraved lines or embeded fibers may be replaced by a computer-generated image superimposed on a screen or eyepiece.Both terms may be used to describe any set of lines used for optical measurement,but in morden use reticle is most commonly used for gunsights and such,while graticule is more widely used for the oscilloscope display,microscope slides,and similar roles. |