This app displays a ruler on the screen. You can measure the objects by showed ruler on the screen. You can also measure the picture's size by the showed ruler on the screen.

Show ruler on the screen (cm, inch, pixel) Show screen's infromation (DPI, resolution, display size) You can measure the opened picture by the ruler on the screen.

(v10.1.1) - Recompiled the app with the newest SDKs. (v10.1.0) The calculation from logical DPI, there was that the correct result can not be obtained by setting the OS and display. So changed the calculation of inch and cm to the calculation from Raw DPI. (v10.0.1) - Can move the opened picture. (v10.0.0) - Supported Windows 8.1.