Microscope Eyepiece Reticles

A microscope eyepiece reticle (or reticule) is a small piece of glass with a ruler printed on it that is placed in the eyepiece. When looking through the microscope, the specimen can be easily measured, as the ruler is imposed on the image.

There are many different types of microscope eyepiece reticles. Standard reticles include cross lines, grids and rulers.

Specialized reticles include Walton & Beckett reticles (shown below), and grain sizing reticles.