http://www.kevinfreitas.net/extensions/measureit/
MeasureIt 0.3.8 MeasureIt
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
Download MeasureIt 0.3.8 (17.9K) »
Instructions for Use
- click the MeasureIt button
in the status bar or toolbar to turn it on/off - click and drag out a ruler box
- click and hold to move the ruler box
- CTRL + Arrow Keys to nudge ruler by 1 pixel
- CTRL + SHIFT + Arrow Keys to nudge ruler by 5 pixels
- click the "X" to close that ruler or click outside of it to begin drawing another ruler
- ESC key to turn off MeasureIt
