sitl PreciseMeasure is a tool to measure objects in several options.
You can easily measure the height and width of an object , a distance between an object and a corner radius, just select what you want to measure. You can
set font color, line color, font size and arrow head. If you want to change something after measure, you can use EDIT panel. There are functions like: change font size, slide text and line
You can measure in different units of measurement, just change the document settings.
If you want to measure several objects, just select them.
Working with Adobe Illustrator CC+, CC2017.PreciseMeasure