eyepiece graticule

'eyepiece graticule' can also refer to...


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A grid or scale incorporated in the eyepiece of an optical instrument to assist in counting or measurement. A wide variety of different patterns can be used and are usually engraved on a glass disc that can be temporarily inserted into the eyepiece. They need to be calibrated against a scale (micrometre slide) for each objective of a microscope.

Subjects: Medicine and Health.

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