Drawing dimensioning workbench for FreeCAD v0.15.4576 and newer.
Although the original programmer of the workbench (hamish) is no longer active, this workbench is still actively maintained. Feel free to post issues and pull requests.
For Ubuntu (Linux Mint) we recommend adding the community ppa to your systems software resources and install, via the sysnaptic package manager, the desired addon.
Refer here for more information: https://launchpad.net/~freecad-community/+archive/ubuntu/ppa
On other Linux distros try to install manually via Terminal and git, replacing apt-get if not installed, with your distro's package manager:
$ sudo apt-get install git python-numpy python-pyside
$ mkdir ~/.FreeCAD/Mod
$ cd ~/.FreeCAD/Mod
$ git clone https://github.com/hamish2014/FreeCAD_drawing_dimensioning.git
Once installed, use git to easily update to the latest version:
$ cd ~/.FreeCAD/Mod/FreeCAD_drawing_dimensioning
$ git pull
$ rm *.pyc
Please use the FreeCAD-Addons-Installer provided here: https://github.com/FreeCAD/FreeCAD-addons
For more in-depth information refer to the corresponding tutorial on the FreeCAD-Homepage: http://www.freecadweb.org/wiki/index.php?title=How_to_install_additional_workbenches
Copy or unzip the drawing dimensioning folder to the directory FreeCAD.app/Contents/Mod where FreeCAD.app is the folder where FreeCAD is installed. (thanks PLChris)
For more in-depth information refer to the corresponding tutorial on the FreeCAD-Homepage: http://www.freecadweb.org/wiki/index.php?title=How_to_install_additional_workbenches
For instructions on usage of the workbench refer to the wiki (link on top of the page) [https://github.com/hamish2014/FreeCAD_drawing_dimensioning/wiki]