Along with its stabilization and scripting capabilities, Lazy Nezumi Pro offers some pretty useful rulers that will help with technical drawing. These pages will show you how to use them.
When a ruler is active, guides will be displayed over your canvas. These are rendered on a transparent overlay window. You can control its opacity and other settings via Settings/Edit Overlay Settings. While you're there, be sure to enable Direct2D for improved performance (if you experience any lag, you may try a different adapter via the list, or try turning off Direct2D).
Most of the ruler modes have parameters that control how the ruler behaves. They can be controlled the following ways:
You'll also notice that all ruler modes have a common Accuracy parameter. When set to a value of 1, the line you draw will be fully projected onto the selected ruler. The closer this value gets to 0, the more of your original input gets mixed in, letting you add imperfections to make the lines look more natural. Set it to 0 if you don't want your line to snap to the ruler at all, but still wish to see the overlay guide. You can configure the Ruler Accuracy Off/Restore global shortcut to quickly toggle this parameter.
When using the rulers, be sure to disable any stabilizer or line smoothing feature in your art program, as this can interfere.
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