How to use a microscope as a measuring tool?

When using a microscope, generally magnification is higher and a ruler will not work unless you are using a very low power stereo microscope. When using a compound high power microscope an eyepiece reticle is used to make measurements.

Overview. Measuring microscopes combine an optical microscope with a table capable of precise movement to measure targets. As with optical comparators, a telecentric optical system is used to enable accurate measurements. ... Different types of measuring microscopes are available to match different applications.

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