Here is a visual tutorial of the navigation tools available to use in the Chief Architect 3D Viewer
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Mobile - 3D Viewer
10207 - 3D Viewer: Creating Interactive Models for Your Clients
10147 - Sharing 3D Viewer Files and Viewing in a Web Browser
10165 - How to Open a 3D Viewer File
10148 - Camera View Navigation in the 3D Viewer app
3207 - Using the Glass House Rendering Technique in the 3D Viewer App
3206 - Adding Notes to an Existing 3D Viewer Model
10146 - Preparing a plan for the 3D Viewer
3209 - Exporting Chief Architect Models with Notes to 3D Viewer
3208 - Importing Collada Files into the 3D Viewer App