Leonardo's Window

Leonardo Da Vinci used this window to help draw their pictures. I did this for the class of technical drawing of my brother in Fine Arts.

How to use:

Put an object behind the methacrylate using an acetate sheet with the marks you require your picture (land line, vanishing point, etc..) Put it on the methacrylate panel vertically. Look through the eye by adjusting the height and depth. The marks of the acetate sheet will help you draw your figure.