From Spadix Software:
The Screen Ruler is a great tool that allows you to accurately measure anything on your screen. This is especially useful when measuring graphics, web page browser sizes or whatever. Screen Ruler can display Pixels, Inches, Picas or Centimeters.
December 27, 2011
Version: JR Screen Ruler 1.5
Easy to use It works as designed Very light impact on memory usage (<2MB on Win XP) Inch / cm units of measure available Pixel / inch calibration allowed
The centimeters scale does not show millimeters, which makes JR Ruler useless It has a cross as a cursor in place of a bar, which makes positioning uncertain No transparency adjustable No ruler height adjustable No colour adjustable
Thank you to publishers to make available this tool for free, however his flexibility is well below similar products, and forgetting about millimeters is a severe design defect.
This is a no frills on-screen ruler that is easy to use and effective in measuring anything on your screen. You can switch between inches, pixels, picas, centimeters, or inches. You can orient the ruler horizontally or vertically.
None at all. Only a couple suggestions for the next edition if one comes out: add transparency and the option to select different color schemes. Yellow is ok, but it's a bit on the ugly side. lol.
A previous review complained that Jruler was off by half an inch when measuring an object that was 10 inches. This is simply not true. I measured graphics that were 10 inches and larger and the measurements were dead on. The only explanations I can come up with this discrepancy by the other reviewer are his monitor or software is malfunction or it is a review put up by a rival ruler software developer who is trying to downgrade JRuler.
I found that JRuler out performs all the programs that are trying to charge $10-$25 for their ruler apps. Come on guys, it's only a ruler program. How can you charge that much for such a simple utility when JRuler does the same thing for FREE?
I guess you have to calibrate your ruler, as the pixels/inchs ratio calculated by Windows may not be precise; that's why rulers often have the calibrate function, and JR has: select "Pixels" as the UoM, right click, select "Pixel per inch" and set the value you have checked by a physical ruler on the screen.