SketchUp Quad Modeling Gallery by Rafael Rivera

[indie3d]

I used a SketchUp extension that I developed named Composition Guides which is FREE.
You can download it in my Extension Warehouse OR Gumroad

I also created a forum post explaining the extension features HERE

Here is the answer to your question…

Steps:

1. Open Composition Guides after installing the SketchUp extension.
2. Open de dropdown menu and select the option (1:1 - Square)
3. Click the Plus Button (+) to create a SketchUp scene that will remember the viewport setting.
4. Done!

Also, this can be achieved in other ways but I am just mentioning to you what I personally did. Cheers!