Based on your question I think you are looking for setting up a part template including setting the default precision and units. This video shows all the steps. Make sure to watch the whole thing - it has all the steps to make sure any custom templates you create show up!
Note: I have not tested this on SW 2014 yet, but is consistent with all the times I have done it on older versions of SW.
https://www.youtube.com/watch?v=5D733G2ruwM
-matto-
P.S. As the author briefly mentions, you can use this same process for Assemblies and Drawings. If you want the same precision and unit settings in all 3, you need a new template for all 3!