Ocular micrometer

An ocular micrometer is a glass disk that fits in a microscope eyepiece that has a ruled scale,[1][2] which is used to measure the size of magnified objects. The physical length of the marks on the scale depends on the degree of magnification.

Ocular micrometer
Micrometer Eyepiece

References
  1. Gunasekaran, P. (2007). Laboratory Manual In Microbiology. New Age International. p. 22. ISBN 978-81-224-0783-9.
  2. Aneja, K. R. (2007). Experiments In Microbiology, Plant Pathology And Biotechnology. New Age International. p. 61. ISBN 978-81-224-1494-3.


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