The Measurement Tool allows you to
obtain measurements from your images with sub-pixel
accuracy. The tool also displays the pixel value averages
of your measurement type. If you have a calibration
object attached to your image, then the displayed
units of measure will be calibrated.
The Measurement Tool gives you three types of measurements: Point-to-Point, Line, and Enclosed. Measurement are taken using ROIs. You may move and/or re-size these ROIs and the tool will automatically update the displayed measurements. You can even use point-to-point measurements using two points in different images!