Rated 3 out of 5 stars

Works as intended, but not on every drag. Sometimes it doesn't created a measuring rectangle. However, the [ESC] key will clear the measure mode if you're stuck so that you can try again. Usually works on the second try. Overall it does a decent job, but no options to configure it.

This review is for a previous version of the add-on (0.1.1-signed.1-signed).