Ocular micrometer

Short description: Device used to measure size of microscopic objects

Ocular micrometer

Micrometer Eyepiece

An ocular micrometer or eyepiece micrometer is a glass disk, engraved with a ruled scale, that fits in an eyepiece of a microscope,[1][2] which is used to measure the size of microscopic objects through magnification under a microscope. When the eyepiece micrometer is calibrated using a stage micrometer, the length of the divisions on the scale depends on the degree of magnification.[3]

## References

1. ↑ Gunasekaran, P. (2007) (in en). Laboratory Manual In Microbiology. New Age International. p. 22. ISBN 978-81-224-0783-9. https://books.google.com/books?id=VkFy_NuSTL8C&pg=PA22.
2. ↑ Aneja, K. R. (2007) (in en). Experiments In Microbiology, Plant Pathology And Biotechnology. New Age International. p. 61. ISBN 978-81-224-1494-3. https://books.google.com/books?id=QYI4xk9kOIMC&pg=PA61.
3. ↑ "Microscope Calibration | Microscope World Resources". https://www.microscopeworld.com/t-calibration.aspx.

## External links

* Laboratory Investigation: The Micrometer Eyepiece

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