When you are sketching a feature, the sketch grid does not always align with the vertices and lines of the sketch or the underlying reference geometry. You can use the following techniques to realign the grid:
Shift the grid relative to the sketch by selecting a vertex representing the origin of the grid.
Rotate the grid relative to the sketch by selecting a line that will be parallel to the X-axis of the sketch.
Remove any realignment and reset the grid to its original orientation.
Changing the origin and rotating the sketch grid allows you to quickly create features that might be difficult to create using the default grid location. Rotating the grid has the following effect:
The grid coordinates of the current cursor position are displayed in the upper-left corner of the viewport, and you can use these coordinates as a guide. The grid coordinates displayed are relative to the current alignment of the sketch grid and change if you realign the grid.
The sketch coordinates of the current cursor position are displayed in the upper-right corner of the viewport. The sketch coordinates displayed are relative to the original alignment of the sketch grid and do not change if you realign the grid.
When you enter the coordinates of a vertex in the prompt area, those coordinates are relative to the current alignment of the sketch grid.
Old and new horizontal and vertical dimensions remain horizontal and vertical.
Old horizontal and vertical construction lines remain horizontal and vertical.
New horizontal and vertical construction lines and preselection points are aligned with the rotated grid.
The lines generated by the rectangle tool are aligned with the rotated grid.