S1: Select a standard length from catalogue or key in the component length.

Project: Select a 3D point. The point is projected onto the component direction vector. The distance from the start point of the component to the projected one becomes the component length.

To: Select a 3D point. Component direction is set to the direction of the start point of the component and the selected point (Orientation angles: V and H are set accordingly). The distance from the start point of the component to the selected point becomes the component length.