23.1 Setting Up the Grid
We’re going to make an isometric image, meaning all three coordinate axes are separated by equal angles (60 degrees) and have the same scale. This makes it much easier to use; for example, a cube remains the same length regardless of which axis you measure it along.
Open the Document Properties dialog (7.2.1 Grid Options), choose the Grids tab, and create the default axonometric grid with both X and Z angles set to 30 degrees (measured from the horizontal). You may want to set the spacing (it is called Spacing Y even though, the grid being isometric, it affects all three axes in the same way) to the minimum measurable distance in your drawing. For example, if all dimensions of the drawing elements must be in millimeters ...
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