When you place an element or component in a project view, it snaps to set dimension increments. For example, when you are sketching a wall and move the cursor from left to right in the drawing area, you see the dimensions for the wall increase according to the defined length dimension snap increments. Likewise, when you place an element by an angle, angle snap dimensions increase according to the defined angle dimension snap increments.
You can define multiple length and angle snap increments because increments change as you change your zoom level (the closer you zoom in, the smaller the increment; the further you zoom out, the larger the increment).
To set snap increments: