I just happened to notice Advanced Ruler was mentioned by AndroidBoss about a month ago. I am flattered Advanced Ruler was picked among several other ruler apps. (Even though Advanced Ruler Pro is the only camera ruler on the android market, Advanced Ruler is not the only screen ruler. There is actually a relatively old screen ruler that has more than 50k downloads). I am even flattered that Android Ruler is listed side by side with other four great apps. All those four apps have > 250k downloads (some of them might have over 1 mil downloads)

Anyway, here is the link and the quoted text.  I don’t know the name of the reviewer but he/she certainly understand the Advanced Ruler very well and all he/she said below is very accurate. And thank you!

http://androidboss.com/android-toolbox-5-android-apps-for-hanging-pictures-straight-etc/

Quoted from AndroidBoss

Advanced Ruler

This app isn’t going to replace a 12 inch ruler or a 36 inch yardstick anytime soon for one simple reason: I don’t happen to have a phone with a 12 inch display. But if you just need to get a quick measurement of something small, there are a number of ruler apps in the Android Market.

Here’s why I like Advanced Ruler:

The software will automatically recognize a variety of Android smartphones, which lets it figure out exactly how large your screen is and automatically calibrate the ruler correctly. If your phone isn’t automatically recognized you can hit a calibrate button and use an old fashioned measuring tape to identify help the app figure out just how to draw the ruler on your smartphone.

You can also adjust the direction of the ruler and toggle between inches and centimeters. The ruler can be locked, which means you’ll just see 3 or 4 inches or so. Or you can unlock the ruler, allowing you to scroll past the edge of the screen to see the 5th inch or further.

Advanced Ruler also lets you adjust the text size, ruler style, and other settings.