ImageJ Tutorial: How to add scale bar

Using ImageJ to add a scale bar to an image

Imagej Tutorial : How to Set scale bar in micro-structure using imagej

Cropping images and adding a scale bar to microscopy images

Creating Accurate Scale Bars for Microscopy

AS Biology - Using scale bars to calculate magnification

ImageJ Tutorial - Measuring Lengths and Angles

ImageJ Analysis: Length Measurement, Area Measurement and Thresholding

Thresholding segmentation and measuring shapes in ImageJ