Evaluation: Difference between revisions
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==Measuring distances== | ==Measuring distances== | ||
<gallery mode=packed heights=220> | <gallery mode=packed heights=220> | ||
File:Measurement using transparent ruler in microscopy.jpg|You can use a regular transparent ruler for most purposes, since it is rarely necessary to specify distances as more exact than millimeters. | File:Measurement using transparent ruler in microscopy.jpg|You can use a regular transparent ruler for most purposes, since it is rarely necessary to specify distances as more exact than millimeters. It works best on low magnification. | ||
File:Measurement of tumor size on two microscopy slides.jpg|Alternatively, use a marking pen to mark the limits under the microscopy, and then use a regular ruler to measure the dimensions. This works even if the distance exceeds the field of view, or spans more than one slide. | File:Measurement of tumor size on two microscopy slides.jpg|Alternatively, use a marking pen to mark the limits under the microscopy, and then use a regular ruler to measure the dimensions. This works even if the distance exceeds the field of view, or spans more than one slide. | ||
File:Calibration slide with rulers and grids.jpg|If sub-millimeter measurement is needed, you may use a calibration slide, which is basically a translucent ruler with 0.1 mm line resolution or smaller, which may cost about $15 if none of your colleagues has one to lend, or the department can't provide one for you. | File:Calibration slide with rulers and grids.jpg|If sub-millimeter measurement is needed, you may use a calibration slide, which is basically a translucent ruler with 0.1 mm line resolution or smaller, which may cost about $15 if none of your colleagues has one to lend, or the department can't provide one for you. | ||