User:Calebjbaker/freerulers
Here is a list of best free screen rulers.
These screen rulers let you measure screen objects easily.
All these screen rulers are completely free
and can be downloaded to Windows PC.
These screen ruler software offer various features, like:
measure the distance between two points on screen,
can measure the angle,
measure value of x-y coordinates,
various measurement units such as
pixels, points, millimeters, centimeters, inches etc.
both horizontally and vertically,
set transparency of ruler,
change ruler background color.
These screen rulers are helpful for web designers and others.
So, go through this list of free screen rulers
and see which ones you like the most.
http://listoffreeware.com/list-best-free-screen-rulers/