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Add the model

Goal: add the 3D model of the real object, and make sure it has the right size.

Steps​

  1. Open step 2 Model.

  2. Drag the model from the Project window into Model Prefab. It appears in the preview.

  3. Read the size the tool reports: The model as shown measures … × … × … mm (width × height × depth).

    Step 2 Model

  4. Measure the real object. If the sizes don't match, fix the Scale:

    The model was made in…Scale
    Millimetres (sizes 1000× too big)0.001
    Centimetres (sizes 100× too big)0.01
    Metres (sizes correct)1

    The buttons next to Scale set these values for you. Check the reported size again afterwards.

  5. Press Next.

Position and rotation​

Position (mm) and Rotation (degrees) move the model relative to the QR codes. You usually don't need them now: leave them at zero and place the codes in step 4. Reset Placement sets them back.

Good to know​

  • Use the model from the Project window, not from the Hierarchy. Objects in the scene aren't accepted here.
  • The size must be right. If the model is too big or too small, it can't line up with the real object, however carefully the codes are placed.