BTW, just read the "Review Summary" above, Pros & Cons. Let me tell you something... The "Cons" written in above, "A little difficult to handle..." I believe was put in there because they needed to add SOmEthInG in the Cons column. Okay, if you are someone who has difficulty using a wooden ruler or perhaps have mastered that and moved on to the flexible "tape" measure and find that jump in tools a little difficult, then yeah, Screen Calipers is a little tough to figure out in the beginning.
I've used Screen Calipers for many years. It's an awesome tool for coding, especially when you're looking for specific, down to the pixel, of images on the screen or page width or any of countless other sizing needs. I use it all the time. It's a very small program and uses very little memory. Great tool!