Do you know, that… ?

Document units set in the template. You can, of course, quickly change the status bar, or click Edit document units (bar) or directly in the Options > document properties.

Imagine the situation, unit where the document is millimeters [mm]. However, you are designing a yacht or boat, and the need to introduce a time dimension in feet. You can do this in the window modify developing tab units.

Alternatively you can enter 600 ‘ (apostrophe).

If, however, you are designing a piping or hydraulic / pneumatic, You can also enter the dimensions in the other unit. In case of, When the main unit of the document are millimeters, and the need to introduce the dimension in inches, enter the dimension symbol “. Why is it better than the quote symbol to enter the word cal?

Because, that the name of the unit depends on the language. The Polish version of SolidWorks, select from a list or enter cal, but it will be in English in (an abbreviation of. inch). By using the “ Independence from language! It will be the same with the less-used foot unit, better to type ‘.