Micrometer

A micrometer for a microscope is an accessory that can be attached to the stage of a microscope to measure the size of objects visible under the microscope.

It typically consists of a scale with graduations in micrometers or other small units, and a device for moving the scale into position over the object being measured.

Some micrometers for microscopes may be illuminated to improve visibility, and some may have a built-in reticle to aid in making accurate measurements. They are commonly used in biological research, material science, and other fields where precise measurements of microscopic objects are required.