This is something I had no idea I needed until now. I used to measure things by initiating a screenshot and then dragging to measure. I'd say this is WAY easier.
This is a no-brainer upgrade for me. PixelSnap 1 has been amazing (using it for over a year now), and this just adds even more features.
I love how this would help me as a developer in measuring directly from the screen.
I have ONE feature request though: the option to turn the cross into a color picker with pixel zoom. The app could then remember the last three picked values and optionally give those in RGB/HSL/HEX (Like Sip used to do) 👍