gCaliper is a screen caliper to measure pixel distances, even with variable rotation. The theme is customizable. It requieres Mono / NET 4.0 and GtkSharp 3 and runs on Linux, Mac and Windows.

You need to install the dependencies. Example for Ubuntu/Debian:

sudo apt-get install mono-complete gtk-sharp3

Than:

git clone https://github.com/Arakis/gcaliper.git
cd gcaliper
make

Launch gcaliper:

src/bin/gcaliper.exe

Alternatively install it globally:

sudo make install

For uninstall:

sudo rm -f /usr/bin/gcaliper
sudo rm -rf /usr/share/gcaliper/

If you have any suggestions, please let me know.

In the moment i'm looking for help to create a DEB and RPM package.

• Use Arrow keys to move
• Use Control+Arrow keys to resize
• Use Shift for bigger steps
• You can rotate with Mouse or with R and T key.
• Use Control while rotation for variable angle
• Use Shift while rotation to snap to 45° steps
• Use V key and H key to switch between horizontal and vertical angle.
• Right click for context menu
• N key minimizes the application
• Home key sets the distance to 0 and End key sets the distance to nearly to screen dimension
• C key changes jaw color
• Control+Q or Control+W quits the application