The perspective is created by using a specially designed tracking rule, whose phenolic tracking balls fit into the three specially crafted (routed), slightly curved side slots. Thus, when you draw lines using one side of the tracking rule, the perspective effect is immediately generated. To draw a traditional 2D drawing using the same board, you merely place the tracking rule on the board with tracking balls positioned over the straight edge of the board, which then turns tracking rule into a T-guide.
Although the Eye-Level Board is mainly restricted to drawing bigger objects, it produces perspectives better than the Bird's-Eye-View Board version. When drawing interiors on an Eye-Level-View Board, they come out as if you are inside the room. Thus, the Eye-Level Perspective Board version is better suited for architects, building designers, interior designers and artists who specialise in interior and exterior building designs. It is a handy working and selling tool for kitchen and bathroom designers. It is also ideal for landscape designers and architects.
By using the "optional extra" - Draw-to-scale CD, you can draw the perspectives "to scale", or with correct proportions.
The Eye-Level Perspective Drawing Board is not suitable for drawing perspectives of smaller objects, such as furniture or products.