The profile projector consists of a glass table the object to be projects is tobe placed on the glass table either directly or with the help of a suitable fixturedepending upon the type of job. The table is equipped with two micrometers.With the help of micrometers the movement of the glass table in turn image canbe precisely registered. Below the glass table a light source and condensing or collimating lens system exists. It also consists of a screen where the image of the work piece is projected with the help of mirrors and lenses. The opticalsystem of the profile projector is shown in the figure