Photon Redlines for Chrome
More About Photon Redlines
+ To add guidelines, click and drag horizontally or vertically and you will see the guideline appearing. Release drag to place them comfortable.
+ To calculate distance values between two guidelines, place the first guideline and drag the second in the same direction.
+ Once you place the second guideline, its distance (horizontally or vertically, in pixels) will be added.
+ Double click to clear all guidelines and distance values.
+ Click Photon Redlines again to hide the grid-lines and guide-lines.