Select a different template
SketchUp is installed with several templates, including: Architectural - US, Centimeter, Meters, and Millimeters. To change to a different template:
1.Open the Window menu (Mac = SketchUp menu).
2.Click Preferences.
3.In the left pane, click Template.
4.In the right pane, select a drawing template.
5.Click OK to close the System Preferences dialog box.
6.To open a new model using the selected template, open the File menu, and click New.
7.The selected template is also used after you close and restart SketchUp.
Make changes to the default template you are using
1.Open the File menu.
2.Click Save As.
3.In the Save As dialog box, browse to the SketchUp Templates folder, which is installed by default to: •SketchUp Pro 8 for PC - C:Program FilesGoogleGoogle SketchUp #Resourcesen-USTemplates.
•SketchUp Pro 8 for Mac - ~/Library/Application Support/Google SketchUp #/SketchUp/Templates.
•SketchUp 2015 for PC - C:Program Files (x86)SketchUpSketchUp 2015Resourcesen-USTemplates
•SketchUp 2015 for Mac -~/Library/Application Support/SketchUp 2015/SketchUp
4.Save the template using the existing template name or a new name, for example, "My Template."
5.Back in SketchUp, if you saved your changes using a new template name, select that new template (follow the preceding "Select a different template" procedure).
6.To open a new model using the selected template, open the File menu, and click New.
7.The selected template is also used after you close and restart SketchUp.