Scope Boxes

Find furthest extents of building plan and draw a rectangle.  Using Grid Boxes (1/8" / or 3/32" scale), center the unit in the best number of grid boxes vertically and horizontally. Your Scope Box should match the extent of the Grid Boxes.

Find the furthest extents of the unit plan and draw a rectangle.  Using Grid Boxes (1/4" scale) center the unit in the best number of grid boxes vertically and horizontally. Your Scope Box should match the extent of the Grid Boxes.