Periscope with base at 0,0,0

  1. Create a wedge.
  2. Duplicate the wedge and rotate it.
  3. Create a cube, place it between the wedges.
  4. Join the 3 objects (Tools -> Join).
  5. Go to Edit Mode (Tab). Select edge on the base of the object and move the 3D cursor to it (Shift + S -> Cursor to Selected).
  6. Go back to Object Mode (Tab) and select Object -> Transform -> Origin to 3D Cursor.
  7. From the Properties set Location to 0, 0, 0 on x, y, z.
  8. Enjoy your periscope with base at 0, 0, 0. :+1: