I have a picture from SEM. I want to measure a length in nanometers, and wonder if any free software can do it?
you can measure by using ImageJ software..try to download it from google..there, you can measure lenght, area and many more..
ImageJ was absolutely the best option
https://imagej.nih.gov/ij/download.html
Nazeesh Shah
hi, you can use digimizer
how to work ImageJ
I'm interested by working on imageJ but I can't understand how it work.. I need to calculate the area in pixels of my duckweeds to have a population
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